#ChatGPT web client fails to start file downloads after successful /interpreter/download response

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tulip frigateBOT
#

Reported by @light hollow

Bug Report: ChatGPT web client fails to start file downloads after successful /interpreter/download response
`Steps to Reproduce`
  1. Use ChatGPT on desktop via https://chatgpt.com in a Chromium-based browser (tested in Microsoft Edge and Google Chrome on Windows).
    2. Run a workflow that generates downloadable artifacts (for example ZIP or text files).
    3. Example artifacts produced in the UI:
    Metadata ZIP
    PDF shard 001
    PDF shard 002
    Verify sidecar
    4. Click one of the download links in the ChatGPT interface.
    5. The UI shows “Starting download…” but the browser never begins downloading the file.
    6. Inspecting the networ
`Expected Result`

Clicking a generated file in ChatGPT should automatically trigger the browser to download the file.

The client should follow the returned download_url after receiving a successful response from /interpreter/download.

`Actual Result`

The request to /interpreter/download succeeds and returns JSON with a valid download_url, but the ChatGPT web client never navigates to that URL.

The UI remains on “Starting download…” and the file download never begins.

Manual navigation to the returned download_url downloads the file correctly.

`Environment`

Windows Browsers Edge (Chromium) Chrome https://chatgpt.com ChatGPT 5.4 Pro Security Software None installed (no Malwarebytes, BitDefender, AdGuard, etc.) Network Standard home network (not corporate) Additional Notes Issue reproduces across multiple conversations and generated files. The same downloads work normally in the iPhone ChatGPT app.