FA-32506 / Menu interactions / Open access

Pinned menu sections stay below dynamic content · case 01

Pinned menu sections stay below dynamic content.

Verified by executionVariant 1 · 7 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The section-composition model applies `p` at its pin-top operation instead of the stipulated transformation.

THE FAILURE

The section-composition model applies `p` at its pin-top operation instead of the stipulated transformation.

Unsuccessful approach: The attempted repair `sorted(p,key=lambda x:x['pin'])` still violates the pin-top oracle.

Case contract

Menu sections keep headers attached to nonempty groups and separators only between surviving groups; pinned sections retain their declared slots.

Why this case matters

Cascading and context menus require coherent command and session state as content changes.

1 / The failure

Exit 1

"""Failure Map reference implementation. Python standard library only."""
import json
import math
import unicodedata
N = 1
observations = []
def solve(action, p):
    if action == 'empty-group':
        return [g for g in p if g['items']]
    if action == 'separators':
        return sum(([{'separator':True}]+g for g in p[1:]),p[0]) if p else []
    if action == 'header':
        return [{'header':p['title']}]+p['items']
    if action == 'pin-top':
        return p
    if action == 'group-key':
        return [(x['provider'],x['group']) for x in p]
    if action == 'count':
        return sum(len(g['items']) for g in p)
    return {'error': 'unsupported menu operation'}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('empty-group contract', solve('empty-group', [{'title':'empty','items':[]},{'title':'g','items':[N]}]), [{'title':'g','items':[N]}])
check('separators contract', solve('separators', [[N],[N+1]]), [N,{'separator':True},N+1])
check('header contract', solve('header', {'title':'g'+str(N),'items':['a','b']}), [{'header':'g'+str(N)},'a','b'])
check('pin-top contract', solve('pin-top', [{'id':N,'pin':'none'},{'id':N+1,'pin':'top'}]), [{'id':N+1,'pin':'top'},{'id':N,'pin':'none'}])
check('group-key contract', solve('group-key', [{'provider':'p'+str(N),'group':'tools'}]), [('p'+str(N),'tools')])
check('count contract', solve('count', [{'items':[N,N+1,N+2]},{'items':[N+3]}]), 4)
check('unknown operation', solve('unknown', {}), {'error': 'unsupported menu operation'})
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 fixture	Actual	Expected	Outcome
empty-group contract	`[{'items': [1], 'title': 'g'}]`	`[{'items': [1], 'title': 'g'}]`	Passed
separators contract	`[1, {'separator': True}, 2]`	`[1, {'separator': True}, 2]`	Passed
header contract	`[{'header': 'g1'}, 'a', 'b']`	`[{'header': 'g1'}, 'a', 'b']`	Passed
pin-top contract	`[{'id': 1, 'pin': 'none'}, {'id': 2, 'pin': 'top'}]`	`[{'id': 2, 'pin': 'top'}, {'id': 1, 'pin': 'none'}]`	Failed
group-key contract	`[['p1', 'tools']]`	`[['p1', 'tools']]`	Passed
count contract	`4`	`4`	Passed
unknown operation	`{'error': 'unsupported menu operation'}`	`{'error': 'unsupported menu operation'}`	Passed

SHA-256 / 7e9119ed2c02e7354a9eb24895896dc96b40b37fcf4ea0925db4bf1da52b1d51

2 / The unsuccessful fix

Exit 1

"""Failure Map reference implementation. Python standard library only."""
import json
import math
import unicodedata
N = 1
observations = []
def solve(action, p):
    if action == 'empty-group':
        return [g for g in p if g['items']]
    if action == 'separators':
        return sum(([{'separator':True}]+g for g in p[1:]),p[0]) if p else []
    if action == 'header':
        return [{'header':p['title']}]+p['items']
    if action == 'pin-top':
        return sorted(p,key=lambda x:x['pin'])
    if action == 'group-key':
        return [(x['provider'],x['group']) for x in p]
    if action == 'count':
        return sum(len(g['items']) for g in p)
    return {'error': 'unsupported menu operation'}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('empty-group contract', solve('empty-group', [{'title':'empty','items':[]},{'title':'g','items':[N]}]), [{'title':'g','items':[N]}])
check('separators contract', solve('separators', [[N],[N+1]]), [N,{'separator':True},N+1])
check('header contract', solve('header', {'title':'g'+str(N),'items':['a','b']}), [{'header':'g'+str(N)},'a','b'])
check('pin-top contract', solve('pin-top', [{'id':N,'pin':'none'},{'id':N+1,'pin':'top'}]), [{'id':N+1,'pin':'top'},{'id':N,'pin':'none'}])
check('group-key contract', solve('group-key', [{'provider':'p'+str(N),'group':'tools'}]), [('p'+str(N),'tools')])
check('count contract', solve('count', [{'items':[N,N+1,N+2]},{'items':[N+3]}]), 4)
check('unknown operation', solve('unknown', {}), {'error': 'unsupported menu operation'})
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 fixture	Actual	Expected	Outcome
empty-group contract	`[{'items': [1], 'title': 'g'}]`	`[{'items': [1], 'title': 'g'}]`	Passed
separators contract	`[1, {'separator': True}, 2]`	`[1, {'separator': True}, 2]`	Passed
header contract	`[{'header': 'g1'}, 'a', 'b']`	`[{'header': 'g1'}, 'a', 'b']`	Passed
pin-top contract	`[{'id': 1, 'pin': 'none'}, {'id': 2, 'pin': 'top'}]`	`[{'id': 2, 'pin': 'top'}, {'id': 1, 'pin': 'none'}]`	Failed
group-key contract	`[['p1', 'tools']]`	`[['p1', 'tools']]`	Passed
count contract	`4`	`4`	Passed
unknown operation	`{'error': 'unsupported menu operation'}`	`{'error': 'unsupported menu operation'}`	Passed

SHA-256 / 4665658373e6dc3d2c0f94f7a341ece51fea793b4830d8f2ba12e819f72e0bed

HELD IN THE MEMBER ARCHIVE

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

This mechanism has 7 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.

Verification & scope

Offline supplied-valid-payload model; excludes DOM, keyboard, focus, selection, announcements and browser conformance. 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 2026-09-29T14:42:12.970269+00:00.

Case digest / b57b498069255c1bb60d2f8741d3198996352bda62d26db6ae47c24d0c877d0c