FA-32456 / Menu interactions / Open access

Transferring a menu anchor retains requests from the old session · case 01

Transferring a menu anchor retains requests from the old session.

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

ROOT CAUSE

The session-generation model applies `{'generation':p['generation'],'anchor':p['anchor'],'requests':p['requests']}` at its transfer operation instead of the stipulated transformation.

VERIFIED REPAIR

Apply `{'generation':p['generation']+1,'anchor':p['anchor'],'requests':[]}` at transfer.

Unsuccessful approach: The attempted repair `{'generation':p['generation']+1,'anchor':p['anchor'],'requests':p['requests']}` still violates the transfer oracle.

Case contract

Deferred menu work belongs to an open popup generation and its parent generation.

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 == 'response':
        return p['request']==p['live'] and p['open']
    if action == 'closed':
        return p['open'] and p['request']==p['live']
    if action == 'reopen':
        return p['generation']+1
    if action == 'parent':
        return p['parent']==p['live_parent'] and p['child']==p['live_child']
    if action == 'cancel':
        return [x for x in p['requests'] if x['session']!=p['closed']]
    if action == 'transfer':
        return {'generation':p['generation'],'anchor':p['anchor'],'requests':p['requests']}
    return {'error': 'unsupported menu operation'}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('response contract', solve('response', {'request':N,'live':N+1,'open':True}), False)
check('closed contract', solve('closed', {'request':N,'live':N,'open':False}), False)
check('reopen contract', solve('reopen', {'generation':N}), N+1)
check('parent contract', solve('parent', {'parent':N,'live_parent':N+1,'child':3,'live_child':3}), False)
check('cancel contract', solve('cancel', {'requests':[{'session':N,'id':'a'},{'session':N+1,'id':'b'}],'closed':N}), [{'session':N+1,'id':'b'}])
check('transfer contract', solve('transfer', {'generation':N,'anchor':'next','requests':['old']}), {'generation':N+1,'anchor':'next','requests':[]})
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
response contract	`False`	`False`	Passed
closed contract	`False`	`False`	Passed
reopen contract	`2`	`2`	Passed
parent contract	`False`	`False`	Passed
cancel contract	`[{'id': 'b', 'session': 2}]`	`[{'id': 'b', 'session': 2}]`	Passed
transfer contract	`{'anchor': 'next', 'generation': 1, 'requests': ['old']}`	`{'anchor': 'next', 'generation': 2, 'requests': []}`	Failed
unknown operation	`{'error': 'unsupported menu operation'}`	`{'error': 'unsupported menu operation'}`	Passed

SHA-256 / ad03ea27c2aa270a13a30609dd56d8889b1b9e8a420033fcfb6061664e983088

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 == 'response':
        return p['request']==p['live'] and p['open']
    if action == 'closed':
        return p['open'] and p['request']==p['live']
    if action == 'reopen':
        return p['generation']+1
    if action == 'parent':
        return p['parent']==p['live_parent'] and p['child']==p['live_child']
    if action == 'cancel':
        return [x for x in p['requests'] if x['session']!=p['closed']]
    if action == 'transfer':
        return {'generation':p['generation']+1,'anchor':p['anchor'],'requests':p['requests']}
    return {'error': 'unsupported menu operation'}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('response contract', solve('response', {'request':N,'live':N+1,'open':True}), False)
check('closed contract', solve('closed', {'request':N,'live':N,'open':False}), False)
check('reopen contract', solve('reopen', {'generation':N}), N+1)
check('parent contract', solve('parent', {'parent':N,'live_parent':N+1,'child':3,'live_child':3}), False)
check('cancel contract', solve('cancel', {'requests':[{'session':N,'id':'a'},{'session':N+1,'id':'b'}],'closed':N}), [{'session':N+1,'id':'b'}])
check('transfer contract', solve('transfer', {'generation':N,'anchor':'next','requests':['old']}), {'generation':N+1,'anchor':'next','requests':[]})
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
response contract	`False`	`False`	Passed
closed contract	`False`	`False`	Passed
reopen contract	`2`	`2`	Passed
parent contract	`False`	`False`	Passed
cancel contract	`[{'id': 'b', 'session': 2}]`	`[{'id': 'b', 'session': 2}]`	Passed
transfer contract	`{'anchor': 'next', 'generation': 2, 'requests': ['old']}`	`{'anchor': 'next', 'generation': 2, 'requests': []}`	Failed
unknown operation	`{'error': 'unsupported menu operation'}`	`{'error': 'unsupported menu operation'}`	Passed

SHA-256 / 2a362a8829734abae1613980dc9a1bb6cbd0b9bb41df25095ae464f0ee2ae210

3 / The verified repair

Exit 0

"""Failure Map reference implementation. Python standard library only."""
import json
import math
import unicodedata
N = 1
observations = []
def solve(action, p):
    if action == 'response':
        return p['request']==p['live'] and p['open']
    if action == 'closed':
        return p['open'] and p['request']==p['live']
    if action == 'reopen':
        return p['generation']+1
    if action == 'parent':
        return p['parent']==p['live_parent'] and p['child']==p['live_child']
    if action == 'cancel':
        return [x for x in p['requests'] if x['session']!=p['closed']]
    if action == 'transfer':
        return {'generation':p['generation']+1,'anchor':p['anchor'],'requests':[]}
    return {'error': 'unsupported menu operation'}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('response contract', solve('response', {'request':N,'live':N+1,'open':True}), False)
check('closed contract', solve('closed', {'request':N,'live':N,'open':False}), False)
check('reopen contract', solve('reopen', {'generation':N}), N+1)
check('parent contract', solve('parent', {'parent':N,'live_parent':N+1,'child':3,'live_child':3}), False)
check('cancel contract', solve('cancel', {'requests':[{'session':N,'id':'a'},{'session':N+1,'id':'b'}],'closed':N}), [{'session':N+1,'id':'b'}])
check('transfer contract', solve('transfer', {'generation':N,'anchor':'next','requests':['old']}), {'generation':N+1,'anchor':'next','requests':[]})
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
response contract	`False`	`False`	Passed
closed contract	`False`	`False`	Passed
reopen contract	`2`	`2`	Passed
parent contract	`False`	`False`	Passed
cancel contract	`[{'id': 'b', 'session': 2}]`	`[{'id': 'b', 'session': 2}]`	Passed
transfer contract	`{'anchor': 'next', 'generation': 2, 'requests': []}`	`{'anchor': 'next', 'generation': 2, 'requests': []}`	Passed
unknown operation	`{'error': 'unsupported menu operation'}`	`{'error': 'unsupported menu operation'}`	Passed

SHA-256 / 887afad2cc166e01242dddde849486cf3f9d97240c97d3713b02fe8b8b244cfc

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 2026-09-29T14:42:12.450889+00:00.

Case digest / 2673577ead2d2a91b0d1e724d734ed74e36aa575560be285e9986314dd1c40f5