{"abstract":"Menu preview accumulates on the previous preview instead of base state.","category":"Menu interactions","checks":7,"contract":"Hover previews are provisional document overlays; changing preview restores the base, commit applies the actual command once and cancellation removes only the menu-owned preview.","evaluation_group":"s3-menu-interactions-menu-command-preview","failed_approach":"The attempted repair `p['delta']` still violates the base oracle.","family":"s3-menu-interactions-menu-command-preview-base","id":"FA-33781","implementations":{"attempt":{"sha256":"b7e05bf79b7e17a869697154398aeb092284769143ce2695b663c9588fb8bc2e","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nimport unicodedata\nN = 1\nobservations = []\ndef solve(action, p):\n    if action == 'base':\n        return p['delta']\n    if action == 'cancel':\n        return p['base']\n    if action == 'commit-once':\n        return p['base']+p['delta']\n    if action == 'owner-cleanup':\n        return [x for x in p['overlays'] if x['menu']!=p['menu']]\n    if action == 'supported':\n        return p['previewable'] and p['reversible']\n    if action == 'exit-mode':\n        return 'commit' if p['reason']=='execute' else 'restore'\n    return {'error': 'unsupported menu operation'}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('base contract', solve('base', {'base':N,'current_preview':N+5,'delta':2}), N+2)\ncheck('cancel contract', solve('cancel', {'base':N,'current':N+3}), N)\ncheck('commit-once contract', solve('commit-once', {'base':N,'preview':N+2,'delta':2}), N+2)\ncheck('owner-cleanup contract', solve('owner-cleanup', {'overlays':[{'menu':'a','id':N},{'menu':'b','id':N+1}],'menu':'a'}), [{'menu':'b','id':N+1}])\ncheck('supported contract', solve('supported', {'previewable':True,'reversible':False,'command':N}), False)\ncheck('exit-mode contract', solve('exit-mode', {'reason':'leave','owner':N}), 'restore')\ncheck('unknown operation', solve('unknown', {}), {'error': 'unsupported menu operation'})\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"fdba27d0205102eda5e1313e41ce5643d0f58fb97f533b7c3fc851fb35c5a01a","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nimport unicodedata\nN = 1\nobservations = []\ndef solve(action, p):\n    if action == 'base':\n        return p['current_preview']+p['delta']\n    if action == 'cancel':\n        return p['base']\n    if action == 'commit-once':\n        return p['base']+p['delta']\n    if action == 'owner-cleanup':\n        return [x for x in p['overlays'] if x['menu']!=p['menu']]\n    if action == 'supported':\n        return p['previewable'] and p['reversible']\n    if action == 'exit-mode':\n        return 'commit' if p['reason']=='execute' else 'restore'\n    return {'error': 'unsupported menu operation'}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('base contract', solve('base', {'base':N,'current_preview':N+5,'delta':2}), N+2)\ncheck('cancel contract', solve('cancel', {'base':N,'current':N+3}), N)\ncheck('commit-once contract', solve('commit-once', {'base':N,'preview':N+2,'delta':2}), N+2)\ncheck('owner-cleanup contract', solve('owner-cleanup', {'overlays':[{'menu':'a','id':N},{'menu':'b','id':N+1}],'menu':'a'}), [{'menu':'b','id':N+1}])\ncheck('supported contract', solve('supported', {'previewable':True,'reversible':False,'command':N}), False)\ncheck('exit-mode contract', solve('exit-mode', {'reason':'leave','owner':N}), 'restore')\ncheck('unknown operation', solve('unknown', {}), {'error': 'unsupported menu operation'})\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"a94eb917d71e65759bb62865cdf7cdb2ab233f02531386709d26b07b4e0453b8","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nimport unicodedata\nN = 1\nobservations = []\ndef solve(action, p):\n    if action == 'base':\n        return p['base']+p['delta']\n    if action == 'cancel':\n        return p['base']\n    if action == 'commit-once':\n        return p['base']+p['delta']\n    if action == 'owner-cleanup':\n        return [x for x in p['overlays'] if x['menu']!=p['menu']]\n    if action == 'supported':\n        return p['previewable'] and p['reversible']\n    if action == 'exit-mode':\n        return 'commit' if p['reason']=='execute' else 'restore'\n    return {'error': 'unsupported menu operation'}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('base contract', solve('base', {'base':N,'current_preview':N+5,'delta':2}), N+2)\ncheck('cancel contract', solve('cancel', {'base':N,'current':N+3}), N)\ncheck('commit-once contract', solve('commit-once', {'base':N,'preview':N+2,'delta':2}), N+2)\ncheck('owner-cleanup contract', solve('owner-cleanup', {'overlays':[{'menu':'a','id':N},{'menu':'b','id':N+1}],'menu':'a'}), [{'menu':'b','id':N+1}])\ncheck('supported contract', solve('supported', {'previewable':True,'reversible':False,'command':N}), False)\ncheck('exit-mode contract', solve('exit-mode', {'reason':'leave','owner':N}), 'restore')\ncheck('unknown operation', solve('unknown', {}), {'error': 'unsupported menu operation'})\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"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.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"s3-menu-interactions-menu-command-preview-base","generated_at":"2026-09-29T14:42:25.645035+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Cascading and context menus require coherent command and session state as content changes.","repair":"Apply `p['base']+p['delta']` at base.","root_cause":"The menu-command-preview model applies `p['current_preview']+p['delta']` at its base operation instead of the stipulated transformation.","sha256":"53222ad97e2b7a690eb950bc7548f56cc72f498ecf2f1270dbcfe88ca73775be","title":"Menu preview accumulates on the previous preview instead of base state · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":47.136,"exit_code":1,"observations":[{"actual":2,"check":"base contract","expected":3,"passed":false},{"actual":1,"check":"cancel contract","expected":1,"passed":true},{"actual":3,"check":"commit-once contract","expected":3,"passed":true},{"actual":[{"id":2,"menu":"b"}],"check":"owner-cleanup contract","expected":[{"id":2,"menu":"b"}],"passed":true},{"actual":false,"check":"supported contract","expected":false,"passed":true},{"actual":"restore","check":"exit-mode contract","expected":"restore","passed":true},{"actual":{"error":"unsupported menu operation"},"check":"unknown operation","expected":{"error":"unsupported menu operation"},"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"base contract\", \"actual\": 2, \"expected\": 3, \"passed\": false}, {\"check\": \"cancel contract\", \"actual\": 1, \"expected\": 1, \"passed\": true}, {\"check\": \"commit-once contract\", \"actual\": 3, \"expected\": 3, \"passed\": true}, {\"check\": \"owner-cleanup contract\", \"actual\": [{\"menu\": \"b\", \"id\": 2}], \"expected\": [{\"menu\": \"b\", \"id\": 2}], \"passed\": true}, {\"check\": \"supported contract\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"exit-mode contract\", \"actual\": \"restore\", \"expected\": \"restore\", \"passed\": true}, {\"check\": \"unknown operation\", \"actual\": {\"error\": \"unsupported menu operation\"}, \"expected\": {\"error\": \"unsupported menu operation\"}, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":42.112,"exit_code":1,"observations":[{"actual":8,"check":"base contract","expected":3,"passed":false},{"actual":1,"check":"cancel contract","expected":1,"passed":true},{"actual":3,"check":"commit-once contract","expected":3,"passed":true},{"actual":[{"id":2,"menu":"b"}],"check":"owner-cleanup contract","expected":[{"id":2,"menu":"b"}],"passed":true},{"actual":false,"check":"supported contract","expected":false,"passed":true},{"actual":"restore","check":"exit-mode contract","expected":"restore","passed":true},{"actual":{"error":"unsupported menu operation"},"check":"unknown operation","expected":{"error":"unsupported menu operation"},"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"base contract\", \"actual\": 8, \"expected\": 3, \"passed\": false}, {\"check\": \"cancel contract\", \"actual\": 1, \"expected\": 1, \"passed\": true}, {\"check\": \"commit-once contract\", \"actual\": 3, \"expected\": 3, \"passed\": true}, {\"check\": \"owner-cleanup contract\", \"actual\": [{\"menu\": \"b\", \"id\": 2}], \"expected\": [{\"menu\": \"b\", \"id\": 2}], \"passed\": true}, {\"check\": \"supported contract\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"exit-mode contract\", \"actual\": \"restore\", \"expected\": \"restore\", \"passed\": true}, {\"check\": \"unknown operation\", \"actual\": {\"error\": \"unsupported menu operation\"}, \"expected\": {\"error\": \"unsupported menu operation\"}, \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":41.307,"exit_code":0,"observations":[{"actual":3,"check":"base contract","expected":3,"passed":true},{"actual":1,"check":"cancel contract","expected":1,"passed":true},{"actual":3,"check":"commit-once contract","expected":3,"passed":true},{"actual":[{"id":2,"menu":"b"}],"check":"owner-cleanup contract","expected":[{"id":2,"menu":"b"}],"passed":true},{"actual":false,"check":"supported contract","expected":false,"passed":true},{"actual":"restore","check":"exit-mode contract","expected":"restore","passed":true},{"actual":{"error":"unsupported menu operation"},"check":"unknown operation","expected":{"error":"unsupported menu operation"},"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"base contract\", \"actual\": 3, \"expected\": 3, \"passed\": true}, {\"check\": \"cancel contract\", \"actual\": 1, \"expected\": 1, \"passed\": true}, {\"check\": \"commit-once contract\", \"actual\": 3, \"expected\": 3, \"passed\": true}, {\"check\": \"owner-cleanup contract\", \"actual\": [{\"menu\": \"b\", \"id\": 2}], \"expected\": [{\"menu\": \"b\", \"id\": 2}], \"passed\": true}, {\"check\": \"supported contract\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"exit-mode contract\", \"actual\": \"restore\", \"expected\": \"restore\", \"passed\": true}, {\"check\": \"unknown operation\", \"actual\": {\"error\": \"unsupported menu operation\"}, \"expected\": {\"error\": \"unsupported menu operation\"}, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}