ChatGPT web stuck on “Thinking” after Stop; stop_conversation sent but UI remains pending

ChatGPT Bugs
1

I’m seeing a ChatGPT web UI bug where a conversation remains stuck on “Đang suy nghĩ” (Thinking) even after pressing Stop.

Environment:
Chrome 148 / Windows 10 / vi-VN / Plus
Time: 2026-05-19 ~16:30 Asia/Ho_Chi_Minh

Observed:

  • UI remains in thinking state indefinitely
  • Stop button sends /backend-api/stop_conversation
  • UI still does not recover
  • Repeated /backend-api/aip/connectors/links/list_accessible calls
  • Captured one HTTP 500 from list_accessible
  • Console earlier showed: RequestError: Too many concurrent requests
  • Diagnostic JSON confirms containsDangSuyNghi: true and containsLauHon: true

Expected:
Clicking Stop should exit the thinking state or show a recoverable error.

Actual:
The request appears to stop, but the frontend remains stuck.

I can provide screenshot, HAR, and diagnostic JSON if needed.

2

Hey @TrDGL! That definitely sounds weird. I tried the Stop flow on my side and it recovered normally, so this may be tied to the specific session or browser state.

When you get a moment, could you try a fresh chat, a different browser, or an incognito/private window? Clearing cache/cookies may also be worth a quick try.

If it keeps happening, please send support@openai.com a screen recording and HAR file showing the repro. If you already have a case ID, drop it here and I can take a look.

- Sunny