ChatGPT APP Not rendering UI on first response

ChatGPT Apps SDK
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Hi All,

I’m facing ChatGPT not rendering the UI Widget on first resopnse, only when click “Try Again” It will render the UI Widget.

Platform: ChatGPT Web.
Device: Macbook Air M4, Macbook Pro M3
Environment: Dev environment

Steps:

  1. Create the app following the official documentation.
  2. Start the server
  3. Ngrok to expose port
  4. Add Ngrok generated URL to ChatGPT connector and connect the App.
  5. Import the tool to the chat
  6. Sends “Add . . . . to my todo list”

Tried:
1. Safari, Edge, Firefox, Chrome - Normal, Incognito, No extensions.
2. ChatGPT Mobile APP - Works fine (Show UI on first response)
3. Shared the source code to co-worker. - Works fine.
4. Test the shared source code from co-worker. - Same issue
5. Disabled/Enabled Chrome #local-network-access-check

Notice:

  1. First response shows only “Working…” but the second response shows that it is calling the tool. However, the first response does call the tool. Because at first I told it to add an todo item and on retrying it shows 2 items on the todo widget.

Happens every time?: Yes, on every tool I called and every chat.

Image (First response and after clicking retry)

SCR-20260113-bihx
SCR-20260113-bihx1920×1032 72.1 KB

Is there any solution for this?

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