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FA-35056 / Notification interfaces / Open access

Temporary notification mute feedback: mute-window-ended from muted · case 01

The mute-window-ended event leaves a notification in audible-channel instead of unmute-pending.

Verified by executionVariant 1 · 34 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

Deadline assumes backend unmute completed before acknowledgement.

THE FAILURE

Deadline assumes backend unmute completed before acknowledgement.

Unsuccessful approach: Remaining muted after expiration hides the restore attempt.

Case contract

Temporary notification mute feedback is a bounded visual-notification workflow with mutable policy state {'until': 30, 'now': 10, 'muted': False, 'extension': 60}. Its default transition relation is {('audible-channel', 'mute-for-session'): 'mute-pending', ('mute-pending', 'mute-confirmed'): 'muted', ('mute-pending', 'mute-rejected'): 'mute-error', ('muted', 'mute-window-ended'): 'unmute-pending', ('unmute-pending', 'unmute-confirmed'): 'audible-channel', ('unmute-pending', 'unmute-rejected'): 'unmute-error', ('muted', 'extend-mute'): 'extend-pending', ('extend-pending', 'extension-confirmed'): 'muted-extended', ('muted-extended', 'old-window-ended'): 'muted-extended', ('mute-error', 'cancel-mute-intent'): 'audible-channel'}; domain inputs can suppress or redirect transitions and update policy fields, as specified in solve. Different-generation events are inert. Batches apply in order. Optional observe returns the selected policy field alongside the phase.

Why this case matters

Visual notification lifecycle ordering can leave an inbox or toast showing the wrong actionable state even when transport succeeds.

1 / The failure

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

N = 1
observations = []
def solve(initial, events, generation, payload=None, observe=None):
    table = {('audible-channel', 'mute-for-session'): 'mute-pending', ('mute-pending', 'mute-confirmed'): 'muted', ('mute-pending', 'mute-rejected'): 'mute-error', ('muted', 'mute-window-ended'): 'audible-channel', ('unmute-pending', 'unmute-confirmed'): 'audible-channel', ('unmute-pending', 'unmute-rejected'): 'unmute-error', ('muted', 'extend-mute'): 'extend-pending', ('extend-pending', 'extension-confirmed'): 'muted-extended', ('muted-extended', 'old-window-ended'): 'muted-extended', ('mute-error', 'cancel-mute-intent'): 'audible-channel'}
    data = json.loads(json.dumps({'until': 30, 'now': 10, 'muted': False, 'extension': 60})) if payload is None else {**json.loads(json.dumps({'until': 30, 'now': 10, 'muted': False, 'extension': 60})), **json.loads(json.dumps(payload))}
    state = initial
    for delivery in events:
        event, event_generation = delivery[:2]
        arg = delivery[2] if len(delivery) > 2 else {}
        if event_generation == generation:
            previous = state
            data['now'] = max(data['now'],arg.get('now',data['now']))
            if event == 'mute-window-ended' and data['now'] < data['until'] and 'now' in arg: event = 'unknown-event'
            if event == 'extend-mute': data['extension'] = max(data['until'],arg.get('until',data['extension']))
            if event == 'extension-confirmed': data['until'] = data['extension']
            state = table.get((state, event), state)
            if state in ('muted','muted-extended'): data['muted'] = True
            if state == 'audible-channel': data['muted'] = False
    return {'phase': state, 'value': data[observe]} if observe else state
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('audible-channel / mute-for-session', solve('audible-channel', [('mute-for-session', N)], N), 'mute-pending')
check('mute-pending / mute-confirmed', solve('mute-pending', [('mute-confirmed', N)], N), 'muted')
check('mute-pending / mute-rejected', solve('mute-pending', [('mute-rejected', N)], N), 'mute-error')
check('muted / mute-window-ended', solve('muted', [('mute-window-ended', N)], N), 'unmute-pending')
check('unmute-pending / unmute-confirmed', solve('unmute-pending', [('unmute-confirmed', N)], N), 'audible-channel')
check('unmute-pending / unmute-rejected', solve('unmute-pending', [('unmute-rejected', N)], N), 'unmute-error')
check('muted / extend-mute', solve('muted', [('extend-mute', N)], N), 'extend-pending')
check('extend-pending / extension-confirmed', solve('extend-pending', [('extension-confirmed', N)], N), 'muted-extended')
check('muted-extended / old-window-ended', solve('muted-extended', [('old-window-ended', N)], N), 'muted-extended')
check('mute-error / cancel-mute-intent', solve('mute-error', [('cancel-mute-intent', N)], N), 'audible-channel')
check('older notification incarnation', solve('audible-channel', [('mute-for-session', N - 1)], N), 'audible-channel')
check('future notification incarnation', solve('audible-channel', [('mute-for-session', N + 1)], N), 'audible-channel')
check('unknown event is inert', solve('audible-channel', [('unknown-event', N)], N), 'audible-channel')
check('empty delivery batch', solve('audible-channel', [], N), 'audible-channel')
check('N stale deliveries before current delivery', solve('audible-channel', [('mute-for-session', N - 1)] * N + [('mute-for-session', N)], N), 'mute-pending')
check('trace mute-for-session then mute-confirmed', solve('audible-channel', [('mute-for-session', N), ('mute-confirmed', N)], N), 'muted')
check('trace mute-for-session then mute-rejected', solve('audible-channel', [('mute-for-session', N), ('mute-rejected', N)], N), 'mute-error')
check('trace mute-confirmed then mute-window-ended', solve('mute-pending', [('mute-confirmed', N), ('mute-window-ended', N)], N), 'unmute-pending')
check('trace mute-confirmed then extend-mute', solve('mute-pending', [('mute-confirmed', N), ('extend-mute', N)], N), 'extend-pending')
check('trace mute-rejected then cancel-mute-intent', solve('mute-pending', [('mute-rejected', N), ('cancel-mute-intent', N)], N), 'audible-channel')
check('trace mute-window-ended then unmute-confirmed', solve('muted', [('mute-window-ended', N), ('unmute-confirmed', N)], N), 'audible-channel')
check('trace mute-window-ended then unmute-rejected', solve('muted', [('mute-window-ended', N), ('unmute-rejected', N)], N), 'unmute-error')
check('trace unmute-confirmed then mute-for-session', solve('unmute-pending', [('unmute-confirmed', N), ('mute-for-session', N)], N), 'mute-pending')
check('trace extend-mute then extension-confirmed', solve('muted', [('extend-mute', N), ('extension-confirmed', N)], N), 'muted-extended')
check('trace extension-confirmed then old-window-ended', solve('extend-pending', [('extension-confirmed', N), ('old-window-ended', N)], N), 'muted-extended')
check('trace old-window-ended then old-window-ended', solve('muted-extended', [('old-window-ended', N), ('old-window-ended', N)], N), 'muted-extended')
check('trace cancel-mute-intent then mute-for-session', solve('mute-error', [('cancel-mute-intent', N), ('mute-for-session', N)], N), 'mute-pending')
check('domain state regression 1: muted', solve('muted', [('mute-window-ended', N, {'now': 29})], N, {'muted': True}, 'muted'), {'phase': 'muted', 'value': True})
check('domain state regression 2: muted', solve('muted', [('mute-window-ended', N, {'now': 30})], N, {'muted': True}, 'muted'), {'phase': 'unmute-pending', 'value': True})
check('domain state regression 3: extension', solve('muted', [('extend-mute', N, {'until': 20})], N, {}, 'extension'), {'phase': 'extend-pending', 'value': 30})
check('domain state regression 4: until', solve('extend-pending', [('extension-confirmed', N, {})], N, {}, 'until'), {'phase': 'muted-extended', 'value': 60})
check('domain state regression 5: muted', solve('muted-extended', [('old-window-ended', N, {})], N, {'until': 60, 'muted': True}, 'muted'), {'phase': 'muted-extended', 'value': True})
check('domain state regression 6: muted', solve('unmute-pending', [('unmute-confirmed', N, {})], N, {'muted': True}, 'muted'), {'phase': 'audible-channel', 'value': False})
check('domain state regression 7: until', solve('muted', [('extend-mute', N, {'until': 80}), ('extension-confirmed', N, {}), ('old-window-ended', N, {})], N, {'muted': True}, 'until'), {'phase': 'muted-extended', 'value': 80})
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
audible-channel / mute-for-sessionmute-pendingmute-pendingPassed
mute-pending / mute-confirmedmutedmutedPassed
mute-pending / mute-rejectedmute-errormute-errorPassed
muted / mute-window-endedaudible-channelunmute-pendingFailed
unmute-pending / unmute-confirmedaudible-channelaudible-channelPassed
unmute-pending / unmute-rejectedunmute-errorunmute-errorPassed
muted / extend-muteextend-pendingextend-pendingPassed
extend-pending / extension-confirmedmuted-extendedmuted-extendedPassed
muted-extended / old-window-endedmuted-extendedmuted-extendedPassed
mute-error / cancel-mute-intentaudible-channelaudible-channelPassed
older notification incarnationaudible-channelaudible-channelPassed
future notification incarnationaudible-channelaudible-channelPassed
unknown event is inertaudible-channelaudible-channelPassed
empty delivery batchaudible-channelaudible-channelPassed
N stale deliveries before current deliverymute-pendingmute-pendingPassed
trace mute-for-session then mute-confirmedmutedmutedPassed
trace mute-for-session then mute-rejectedmute-errormute-errorPassed
trace mute-confirmed then mute-window-endedaudible-channelunmute-pendingFailed
trace mute-confirmed then extend-muteextend-pendingextend-pendingPassed
trace mute-rejected then cancel-mute-intentaudible-channelaudible-channelPassed
trace mute-window-ended then unmute-confirmedaudible-channelaudible-channelPassed
trace mute-window-ended then unmute-rejectedaudible-channelunmute-errorFailed
trace unmute-confirmed then mute-for-sessionmute-pendingmute-pendingPassed
trace extend-mute then extension-confirmedmuted-extendedmuted-extendedPassed
trace extension-confirmed then old-window-endedmuted-extendedmuted-extendedPassed
trace old-window-ended then old-window-endedmuted-extendedmuted-extendedPassed
trace cancel-mute-intent then mute-for-sessionmute-pendingmute-pendingPassed
domain state regression 1: muted{'phase': 'muted', 'value': True}{'phase': 'muted', 'value': True}Passed
domain state regression 2: muted{'phase': 'audible-channel', 'value': False}{'phase': 'unmute-pending', 'value': True}Failed
domain state regression 3: extension{'phase': 'extend-pending', 'value': 30}{'phase': 'extend-pending', 'value': 30}Passed
domain state regression 4: until{'phase': 'muted-extended', 'value': 60}{'phase': 'muted-extended', 'value': 60}Passed
domain state regression 5: muted{'phase': 'muted-extended', 'value': True}{'phase': 'muted-extended', 'value': True}Passed
domain state regression 6: muted{'phase': 'audible-channel', 'value': False}{'phase': 'audible-channel', 'value': False}Passed
domain state regression 7: until{'phase': 'muted-extended', 'value': 80}{'phase': 'muted-extended', 'value': 80}Passed

SHA-256 / 7362f487c1a765d2bf825a7503d5c45659f5d4431ac799265b6274a81f87b8ce

2 / The unsuccessful fix

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

N = 1
observations = []
def solve(initial, events, generation, payload=None, observe=None):
    table = {('audible-channel', 'mute-for-session'): 'mute-pending', ('mute-pending', 'mute-confirmed'): 'muted', ('mute-pending', 'mute-rejected'): 'mute-error', ('muted', 'mute-window-ended'): 'muted', ('unmute-pending', 'unmute-confirmed'): 'audible-channel', ('unmute-pending', 'unmute-rejected'): 'unmute-error', ('muted', 'extend-mute'): 'extend-pending', ('extend-pending', 'extension-confirmed'): 'muted-extended', ('muted-extended', 'old-window-ended'): 'muted-extended', ('mute-error', 'cancel-mute-intent'): 'audible-channel'}
    data = json.loads(json.dumps({'until': 30, 'now': 10, 'muted': False, 'extension': 60})) if payload is None else {**json.loads(json.dumps({'until': 30, 'now': 10, 'muted': False, 'extension': 60})), **json.loads(json.dumps(payload))}
    state = initial
    for delivery in events:
        event, event_generation = delivery[:2]
        arg = delivery[2] if len(delivery) > 2 else {}
        if event_generation == generation:
            previous = state
            data['now'] = max(data['now'],arg.get('now',data['now']))
            if event == 'mute-window-ended' and data['now'] < data['until'] and 'now' in arg: event = 'unknown-event'
            if event == 'extend-mute': data['extension'] = max(data['until'],arg.get('until',data['extension']))
            if event == 'extension-confirmed': data['until'] = data['extension']
            state = table.get((state, event), state)
            if state in ('muted','muted-extended'): data['muted'] = True
            if state == 'audible-channel': data['muted'] = False
    return {'phase': state, 'value': data[observe]} if observe else state
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('audible-channel / mute-for-session', solve('audible-channel', [('mute-for-session', N)], N), 'mute-pending')
check('mute-pending / mute-confirmed', solve('mute-pending', [('mute-confirmed', N)], N), 'muted')
check('mute-pending / mute-rejected', solve('mute-pending', [('mute-rejected', N)], N), 'mute-error')
check('muted / mute-window-ended', solve('muted', [('mute-window-ended', N)], N), 'unmute-pending')
check('unmute-pending / unmute-confirmed', solve('unmute-pending', [('unmute-confirmed', N)], N), 'audible-channel')
check('unmute-pending / unmute-rejected', solve('unmute-pending', [('unmute-rejected', N)], N), 'unmute-error')
check('muted / extend-mute', solve('muted', [('extend-mute', N)], N), 'extend-pending')
check('extend-pending / extension-confirmed', solve('extend-pending', [('extension-confirmed', N)], N), 'muted-extended')
check('muted-extended / old-window-ended', solve('muted-extended', [('old-window-ended', N)], N), 'muted-extended')
check('mute-error / cancel-mute-intent', solve('mute-error', [('cancel-mute-intent', N)], N), 'audible-channel')
check('older notification incarnation', solve('audible-channel', [('mute-for-session', N - 1)], N), 'audible-channel')
check('future notification incarnation', solve('audible-channel', [('mute-for-session', N + 1)], N), 'audible-channel')
check('unknown event is inert', solve('audible-channel', [('unknown-event', N)], N), 'audible-channel')
check('empty delivery batch', solve('audible-channel', [], N), 'audible-channel')
check('N stale deliveries before current delivery', solve('audible-channel', [('mute-for-session', N - 1)] * N + [('mute-for-session', N)], N), 'mute-pending')
check('trace mute-for-session then mute-confirmed', solve('audible-channel', [('mute-for-session', N), ('mute-confirmed', N)], N), 'muted')
check('trace mute-for-session then mute-rejected', solve('audible-channel', [('mute-for-session', N), ('mute-rejected', N)], N), 'mute-error')
check('trace mute-confirmed then mute-window-ended', solve('mute-pending', [('mute-confirmed', N), ('mute-window-ended', N)], N), 'unmute-pending')
check('trace mute-confirmed then extend-mute', solve('mute-pending', [('mute-confirmed', N), ('extend-mute', N)], N), 'extend-pending')
check('trace mute-rejected then cancel-mute-intent', solve('mute-pending', [('mute-rejected', N), ('cancel-mute-intent', N)], N), 'audible-channel')
check('trace mute-window-ended then unmute-confirmed', solve('muted', [('mute-window-ended', N), ('unmute-confirmed', N)], N), 'audible-channel')
check('trace mute-window-ended then unmute-rejected', solve('muted', [('mute-window-ended', N), ('unmute-rejected', N)], N), 'unmute-error')
check('trace unmute-confirmed then mute-for-session', solve('unmute-pending', [('unmute-confirmed', N), ('mute-for-session', N)], N), 'mute-pending')
check('trace extend-mute then extension-confirmed', solve('muted', [('extend-mute', N), ('extension-confirmed', N)], N), 'muted-extended')
check('trace extension-confirmed then old-window-ended', solve('extend-pending', [('extension-confirmed', N), ('old-window-ended', N)], N), 'muted-extended')
check('trace old-window-ended then old-window-ended', solve('muted-extended', [('old-window-ended', N), ('old-window-ended', N)], N), 'muted-extended')
check('trace cancel-mute-intent then mute-for-session', solve('mute-error', [('cancel-mute-intent', N), ('mute-for-session', N)], N), 'mute-pending')
check('domain state regression 1: muted', solve('muted', [('mute-window-ended', N, {'now': 29})], N, {'muted': True}, 'muted'), {'phase': 'muted', 'value': True})
check('domain state regression 2: muted', solve('muted', [('mute-window-ended', N, {'now': 30})], N, {'muted': True}, 'muted'), {'phase': 'unmute-pending', 'value': True})
check('domain state regression 3: extension', solve('muted', [('extend-mute', N, {'until': 20})], N, {}, 'extension'), {'phase': 'extend-pending', 'value': 30})
check('domain state regression 4: until', solve('extend-pending', [('extension-confirmed', N, {})], N, {}, 'until'), {'phase': 'muted-extended', 'value': 60})
check('domain state regression 5: muted', solve('muted-extended', [('old-window-ended', N, {})], N, {'until': 60, 'muted': True}, 'muted'), {'phase': 'muted-extended', 'value': True})
check('domain state regression 6: muted', solve('unmute-pending', [('unmute-confirmed', N, {})], N, {'muted': True}, 'muted'), {'phase': 'audible-channel', 'value': False})
check('domain state regression 7: until', solve('muted', [('extend-mute', N, {'until': 80}), ('extension-confirmed', N, {}), ('old-window-ended', N, {})], N, {'muted': True}, 'until'), {'phase': 'muted-extended', 'value': 80})
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
audible-channel / mute-for-sessionmute-pendingmute-pendingPassed
mute-pending / mute-confirmedmutedmutedPassed
mute-pending / mute-rejectedmute-errormute-errorPassed
muted / mute-window-endedmutedunmute-pendingFailed
unmute-pending / unmute-confirmedaudible-channelaudible-channelPassed
unmute-pending / unmute-rejectedunmute-errorunmute-errorPassed
muted / extend-muteextend-pendingextend-pendingPassed
extend-pending / extension-confirmedmuted-extendedmuted-extendedPassed
muted-extended / old-window-endedmuted-extendedmuted-extendedPassed
mute-error / cancel-mute-intentaudible-channelaudible-channelPassed
older notification incarnationaudible-channelaudible-channelPassed
future notification incarnationaudible-channelaudible-channelPassed
unknown event is inertaudible-channelaudible-channelPassed
empty delivery batchaudible-channelaudible-channelPassed
N stale deliveries before current deliverymute-pendingmute-pendingPassed
trace mute-for-session then mute-confirmedmutedmutedPassed
trace mute-for-session then mute-rejectedmute-errormute-errorPassed
trace mute-confirmed then mute-window-endedmutedunmute-pendingFailed
trace mute-confirmed then extend-muteextend-pendingextend-pendingPassed
trace mute-rejected then cancel-mute-intentaudible-channelaudible-channelPassed
trace mute-window-ended then unmute-confirmedmutedaudible-channelFailed
trace mute-window-ended then unmute-rejectedmutedunmute-errorFailed
trace unmute-confirmed then mute-for-sessionmute-pendingmute-pendingPassed
trace extend-mute then extension-confirmedmuted-extendedmuted-extendedPassed
trace extension-confirmed then old-window-endedmuted-extendedmuted-extendedPassed
trace old-window-ended then old-window-endedmuted-extendedmuted-extendedPassed
trace cancel-mute-intent then mute-for-sessionmute-pendingmute-pendingPassed
domain state regression 1: muted{'phase': 'muted', 'value': True}{'phase': 'muted', 'value': True}Passed
domain state regression 2: muted{'phase': 'muted', 'value': True}{'phase': 'unmute-pending', 'value': True}Failed
domain state regression 3: extension{'phase': 'extend-pending', 'value': 30}{'phase': 'extend-pending', 'value': 30}Passed
domain state regression 4: until{'phase': 'muted-extended', 'value': 60}{'phase': 'muted-extended', 'value': 60}Passed
domain state regression 5: muted{'phase': 'muted-extended', 'value': True}{'phase': 'muted-extended', 'value': True}Passed
domain state regression 6: muted{'phase': 'audible-channel', 'value': False}{'phase': 'audible-channel', 'value': False}Passed
domain state regression 7: until{'phase': 'muted-extended', 'value': 80}{'phase': 'muted-extended', 'value': 80}Passed

SHA-256 / f6f76e9fce894ed100146d099c477d52ec23b6f9a3ee1ac7cd21287dcf7c02fa

HELD IN THE MEMBER ARCHIVE

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

This mechanism has 34 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.

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Verification & scope

Stipulated single-notification state and policy model only. Event delivery and acknowledgements are explicit test inputs. No DOM, accessibility announcements, live timers, networking, actual rendering, or production-platform conformance is simulated. 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 2026-09-29T14:42:38.163825+00:00.

Case digest / 7fbd3d0691f57354534783d5446fd7e5ca3c36bebcf6d3626f06a469f96cd8e5