[Bug] Windows Desktop 26.715.4045 freezes during bundled-plugin reconcile; plugin/list blocks for ~61s

Summary

Codex Desktop on Windows repeatedly becomes unresponsive after startup and during sidebar use. The fresh logs point to the Desktop bundled-plugin reconciliation path rather than a damaged thread or a slow plugin index: plugin/list and app/list block for about 61 seconds while the generated openai-bundled marketplace alternates between five and six plugins, removes browser, then reinstalls it as missing, and reinstalls chrome as outdated.

Environment

• Windows 11 Home 25H2, build 26200.8875, x64
• Microsoft Store package: OpenAI.Codex_26.715.4045.0_x64__2p2nqsd0c76g0
• ChatGPT.exe: 150.0.7871.124
• Desktop release reported in log: 26.715.31925
• Global CLI: 0.144.6

Observed behavior

• The window intermittently reports Responding=False after startup/sidebar interaction.
• Main-process RSS temporarily rose from about 419 MB to about 1.07 GB during one occurrence, then later returned to about 290 MB.
• The same installation frequently becomes usable again after the ~60-second block, then freezes again later.
• Repair/reset/reinstall and archiving the previously suspected large thread did not eliminate the issue.

Relevant sanitized fresh-log events:

2026-07-19T15:02:45.085Z [AppServerConnection] method=plugin/list durationMs=60878 errorCode=null
2026-07-19T15:02:45.302Z [AppServerConnection] method=app/list durationMs=61274 errorCode=null
2026-07-19T15:02:46.950Z [BundledPluginsMarketplace] pluginCountAfterWrite=5 pluginCountBeforeWrite=6 pluginNames=[sites,chrome,computer-use,latex,visualize]
2026-07-19T15:02:50.438Z [BundledPluginsMarketplace] pluginName=chrome reason=outdated
2026-07-19T15:02:52.575Z [BundledPluginsMarketplace] pluginName=browser reason=not_in_bundled_marketplace_plugin_names
2026-07-19T15:03:55.219Z [BundledPluginsMarketplace] plugin_marketplace_folder_write_failed folderWritePhase=stop_chrome_native_host pluginCountAfterWrite=6 pluginCountBeforeWrite=5
2026-07-19T15:03:58.286Z [BundledPluginsMarketplace] pluginCountAfterWrite=6 pluginCountBeforeWrite=5 pluginNames=[sites,browser,chrome,computer-use,latex,visualize]
2026-07-19T15:03:59.894Z [BundledPluginsMarketplace] pluginName=browser reason=missing
2026-07-19T15:04:01.870Z [BundledPluginsMarketplace] pluginName=chrome reason=outdated
2026-07-19T15:05:05.535Z [AppServerConnection] method=plugin/list durationMs=60885 errorCode=null

The same interval also reports an electron child-process sampler failure for a spawned PowerShell command that queries Win32_PerfFormattedData_PerfProc_Process and Win32_Process. That sampler error is then surfaced in BundledPluginsMarketplace failures.

Control tests

The equivalent operations complete normally outside the Desktop orchestration:

• Get-CimInstance Win32_PerfFormattedData_PerfProc_Process: 917 ms
• Get-CimInstance Win32_Process: 75 ms
• Win32_Process with the same PID OR filter: 175 ms
• Desktop-bundled codex.exe plugin list: 91 ms

This makes a WMI failure or inherently slow plugin index unlikely. The evidence instead suggests a Desktop child-process result-routing, synchronization, or bundled-plugin reconciliation regression.

Session-state checks

After archiving the originally suspected large thread and restarting:

• sidebar .slice() TypeError: 0
• Item not found in turn state: 0
• ResizeObserver loop: 0
• archived-thread auto-resume: 0
• thread_count_streaming_without_active_runtime: 0
• inflight_turn_count: 0

The unresponsive behavior continued despite those values being clean.

Expected behavior

• plugin/list and app/list should not block the Desktop UI for ~61 seconds.
• The runtime-generated bundled marketplace should not alternate between five and six entries during one startup.
• browser should not be removed and immediately reinstalled as missing.
• A child-process sampler failure should not stall or contaminate bundled marketplace reconciliation.

Related reports

• #33488 — current Windows Desktop intermittent freeze on a recent package
• #26366 — Desktop bundled-plugin reconcile/shared marketplace state
• #21603 — Windows app shows Not Responding when clicked during startup

Raw session JSONL, Sentry scope, account identifiers, and user paths are intentionally not attached. A redacted support bundle is available if maintainers request it.