[macOS] Tasks and projects disappear from sidebar after update, but Search can still open them

What version of the Codex App are you using (From “About Codex” dialog)?

26.715.21425 (build 5488; previous version 26.715.21316)

What subscription do you have?

ChatGPT Pro (local Codex plan_type: prolite)

What platform is your computer?

Darwin 25.5.0 arm64 arm; macOS 26.5.1 (25F80)

What issue are you seeing?

After updating the ChatGPT/Codex desktop app from 26.715.21316 to 26.715.21425, many existing tasks and most projects disappeared from the sidebar.

The tasks are not deleted:

• Search > Recent still finds the missing tasks.
• Opening a search result loads the complete conversation and it continues normally.
• The affected tasks are not visible in Archived.
• Pinning six affected tasks succeeds but does not make them appear in the sidebar.
• The UI has no “organize sidebar chronologically” option.
• Trying to re-add the parent project folder /Users/xx/Documents/Codex does nothing and shows no error.

Local evidence (task titles and contents omitted):

• ~/.codex/state_5.sqlite currently contains 82 thread rows.
• 84 local JSONL rollout files still exist under ~/.codex.
• Affected unarchived thread rows and rollout files are present.

This looks like a sidebar/project-association or list-hydration regression, not data loss.

What steps can reproduce the bug?

1. Have existing tasks organized under several local folders/projects in Codex App 26.715.21316.
2. Update the desktop app to 26.715.21425.
3. Relaunch the app and inspect the sidebar.
4. Observe that many tasks and project entries are missing.
5. Open Search and look under Recent: the missing tasks are returned and can be opened.
6. Check Archived: the affected tasks are not listed there.
7. Pin affected tasks: pinning reports success, but they remain hidden.
8. Use Open Folder to add /Users/xx/Documents/Codex again: no project is added, no error is shown, and the sidebar does not change.

Example affected session ID: 019f5040-0ab0-7763-b1f8-91407f447f40

What is the expected behavior?

All unarchived local tasks should remain visible in the sidebar under their projects after an app update. Re-adding a valid parent folder or pinning a task should immediately make it visible. Search results and the sidebar should be backed by the same task inventory.

Additional information

This resembles several existing reports, but is reproduced on the newer macOS build 26.715.21425:

• #19290 — sidebar empty while Search can still find/open chats
• #22592 — unarchived local threads hidden from the macOS sidebar
• #33057 — projects disappeared after a desktop update while local data remained intact
• #33396 — pin succeeds but does not keep a task visible

No database files were modified. Full logs are available privately if an OpenAI maintainer requests them; I have not attached raw logs because they may contain task content.