Large chats in VSCode extremely slow to load

[jasonpierson]

What version of the IDE extension are you using?

26.422.62136

What subscription do you have?

Pro

Which IDE are you using?

VS Code

What platform is your computer?

Darwin 25.4.0 arm64 arm

What issue are you seeing?

When I select a long-running chat, nothing appears in the Codex sidebar. Sometimes I can get the chat to appear if I click around to another chat and reload it, but not all the time. A loading bar with a percentage or some indication its loading would be very helpful. Otherwise I dont think its doing anything and start clicking around.

What steps can reproduce the bug?

1. Create a long-running chat in the codex extension
2. Close VS Code
3. Open VS Code
4. Attempt to load the chat

What is the expected behavior?

The expected behavior is the chat loads(at least partially) immediately.

Additional information

No response

[github-actions]

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• Long Codex threads fail to hydrate after reload when compacted replacement_history records are large (UI shows empty, logs show missing handler) #19397
• [WSL/Linux] Long Codex threads intermittently open as blank panel, short threads load normally #19434
• VS Code Remote-SSH session resume hangs with app-server outbound queue full #19608
• VS Code extension: Existing chat thread gets stuck only in one workspace until thread receives a new response elsewhere #18963
• [extension][Windows][Cursor/Antigravity] Long existing threads open as blank panel while short threads load normally #18931

Powered by Codex Action