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FA-37721 / Table interactions / Open access

Saved table view restoration: unknown width column · case 01

The table unknown width column result violates the stipulated saved table view restoration contract.

Verified by executionVariant 1 · 6 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The unknown width column decision uses 'if isinstance' instead of 'if c in ids and isinstance'.

THE FAILURE

The unknown width column decision uses 'if isinstance' instead of 'if c in ids and isinstance'.

Unsuccessful approach: The attempted repair 'if c in order[:1] and isinstance' still loses a required part of the table contract.

Case contract

Restore a table view only at matching schema version; deduplicate known order, append new schema columns, keep required columns visible, accept positive-clamped integer nonboolean widths, validate pin sides/density/page-size enums, and ignore removed columns.

Why this case matters

An offline table UI model isolates saved table view restoration, including adversarial row/column relationships.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(schema, saved, version, defaults):
    ids=[c['id'] for c in schema]
    if saved.get('version')!=version: return defaults
    order=[]
    for c in saved.get('order',[]):
        if c in ids and c not in order: order.append(c)
    order += [c for c in ids if c not in order]
    hidden=[c for c in order if c in saved.get('hidden',[]) and not next((x for x in schema if x['id']==c),{}).get('required')]
    widths={c:max(1,w) for c,w in saved.get('widths',{}).items() if isinstance(w,int) and not isinstance(w,bool)}
    pins={c:p for c,p in saved.get('pins',{}).items() if c in ids and p in ('left','right')}
    return {'order':order,'hidden':hidden,'widths':widths,'pins':pins,'density':saved.get('density') if saved.get('density') in ('compact','normal','comfortable') else defaults['density'],'page_size':saved.get('page_size') if saved.get('page_size') in (10,25,50) else defaults['page_size']}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
if N == 1:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':1+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 3, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

if N == 2:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':2+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 4, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

if N == 3:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':3+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 5, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

if N == 4:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':4+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 6, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

if N == 5:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':5+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 7, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
schema evolution{'density': 'comfortable', 'hidden': ['b'], 'order': ['b', 'a', 'c'], 'page_size': 25, 'pins': {'a': 'right'}, 'widths': {'a': 3, 'b': 1, 'gone': 8}}{'density': 'comfortable', 'hidden': ['b'], 'order': ['b', 'a', 'c'], 'page_size': 25, 'pins': {'a': 'right'}, 'widths': {'a': 3, 'b': 1}}Failed
old version{'density': 'normal', 'page_size': 10}{'density': 'normal', 'page_size': 10}Passed
missing version{'density': 'normal', 'page_size': 10}{'density': 'normal', 'page_size': 10}Passed
invalid values{'density': 'normal', 'hidden': [], 'order': ['a', 'b'], 'page_size': 10, 'pins': {}, 'widths': {}}{'density': 'normal', 'hidden': [], 'order': ['a', 'b'], 'page_size': 10, 'pins': {}, 'widths': {}}Passed
negative width{'density': 'normal', 'hidden': [], 'order': ['a'], 'page_size': 50, 'pins': {'a': 'left'}, 'widths': {'a': 1}}{'density': 'normal', 'hidden': [], 'order': ['a'], 'page_size': 50, 'pins': {'a': 'left'}, 'widths': {'a': 1}}Passed
empty schema{'density': 'compact', 'hidden': [], 'order': [], 'page_size': 10, 'pins': {}, 'widths': {}}{'density': 'compact', 'hidden': [], 'order': [], 'page_size': 10, 'pins': {}, 'widths': {}}Passed

SHA-256 / 9e0155d6a10709778332fb2e050394648fafd44b5f3bfbaf8954a3a4595cb2a9

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(schema, saved, version, defaults):
    ids=[c['id'] for c in schema]
    if saved.get('version')!=version: return defaults
    order=[]
    for c in saved.get('order',[]):
        if c in ids and c not in order: order.append(c)
    order += [c for c in ids if c not in order]
    hidden=[c for c in order if c in saved.get('hidden',[]) and not next((x for x in schema if x['id']==c),{}).get('required')]
    widths={c:max(1,w) for c,w in saved.get('widths',{}).items() if c in order[:1] and isinstance(w,int) and not isinstance(w,bool)}
    pins={c:p for c,p in saved.get('pins',{}).items() if c in ids and p in ('left','right')}
    return {'order':order,'hidden':hidden,'widths':widths,'pins':pins,'density':saved.get('density') if saved.get('density') in ('compact','normal','comfortable') else defaults['density'],'page_size':saved.get('page_size') if saved.get('page_size') in (10,25,50) else defaults['page_size']}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
if N == 1:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':1+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 3, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

if N == 2:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':2+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 4, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

if N == 3:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':3+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 5, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

if N == 4:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':4+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 6, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

if N == 5:
    check('schema evolution', solve([{'id':'a','required':True},{'id':'b'},{'id':'c'}], {'version':2,'order':['b','gone','b'],'hidden':['a','b'],'widths':{'a':5+2,'b':0,'gone':8},'pins':{'a':'right','b':'middle'},'density':'comfortable','page_size':25}, 2, {'density':'normal','page_size':10}), {'order': ['b', 'a', 'c'], 'hidden': ['b'], 'widths': {'a': 7, 'b': 1}, 'pins': {'a': 'right'}, 'density': 'comfortable', 'page_size': 25})
    check('old version', solve([{'id':'a'}], {'version':1}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('missing version', solve([{'id':'a'}], {}, 2, {'density':'normal','page_size':10}), {'density': 'normal', 'page_size': 10})
    check('invalid values', solve([{'id':'a'},{'id':'b'}], {'version':2,'widths':{'a':True,'b':2.5},'density':'wild','page_size':13}, 2, {'density':'normal','page_size':10}), {'order': ['a', 'b'], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'normal', 'page_size': 10})
    check('negative width', solve([{'id':'a'}], {'version':2,'widths':{'a':-4},'pins':{'a':'left'},'density':'normal','page_size':50}, 2, {'density':'compact','page_size':10}), {'order': ['a'], 'hidden': [], 'widths': {'a': 1}, 'pins': {'a': 'left'}, 'density': 'normal', 'page_size': 50})
    check('empty schema', solve([], {'version':2,'order':['gone'],'hidden':['gone'],'widths':{},'pins':{'gone':'left'},'density':'compact','page_size':10}, 2, {'density':'normal','page_size':25}), {'order': [], 'hidden': [], 'widths': {}, 'pins': {}, 'density': 'compact', 'page_size': 10})

print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
schema evolution{'density': 'comfortable', 'hidden': ['b'], 'order': ['b', 'a', 'c'], 'page_size': 25, 'pins': {'a': 'right'}, 'widths': {'b': 1}}{'density': 'comfortable', 'hidden': ['b'], 'order': ['b', 'a', 'c'], 'page_size': 25, 'pins': {'a': 'right'}, 'widths': {'a': 3, 'b': 1}}Failed
old version{'density': 'normal', 'page_size': 10}{'density': 'normal', 'page_size': 10}Passed
missing version{'density': 'normal', 'page_size': 10}{'density': 'normal', 'page_size': 10}Passed
invalid values{'density': 'normal', 'hidden': [], 'order': ['a', 'b'], 'page_size': 10, 'pins': {}, 'widths': {}}{'density': 'normal', 'hidden': [], 'order': ['a', 'b'], 'page_size': 10, 'pins': {}, 'widths': {}}Passed
negative width{'density': 'normal', 'hidden': [], 'order': ['a'], 'page_size': 50, 'pins': {'a': 'left'}, 'widths': {'a': 1}}{'density': 'normal', 'hidden': [], 'order': ['a'], 'page_size': 50, 'pins': {'a': 'left'}, 'widths': {'a': 1}}Passed
empty schema{'density': 'compact', 'hidden': [], 'order': [], 'page_size': 10, 'pins': {}, 'widths': {}}{'density': 'compact', 'hidden': [], 'order': [], 'page_size': 10, 'pins': {}, 'widths': {}}Passed

SHA-256 / 0daecfba73873519f94a711409c869d547a82bc4ee192e5e3e109edd3e933fb1

HELD IN THE MEMBER ARCHIVE

The verified repair and its recorded checks are member-only.

This mechanism has 6 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

Every case sharing this mechanism uses the same contract and the same repair, so this one record is held back for all of them.

Member access is invitation-based. Sign in with your invited account to inspect the repair.

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Verification & scope

Schema IDs are unique; settings are finite Python scalar/container values with an explicitly enumerated restoration policy. Deterministic offline table UI model; no browser, DOM, framework, or standards conformance is claimed. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:43:04.088483+00:00.

Case digest / 7877d93381942a13224b564e04e9d17ee65a2b4bd553cfe0c3cd959fe5acc55b