Images not being processed

What version of Codex is running?

codex-cli 0.63.0

What subscription do you have?

Plus

Which model were you using?

gpt-5.1-codex-max

What platform is your computer?

Linux 6.12.57 x86_64 unknown (NixOS)

What issue are you seeing?

Whatever image type I give to codex for inspecting I get the following response:

unexpected status 400 Bad Request: {
  "error": {
    "message": "The image data you provided does not represent a valid image. Please check your input and try again with one of the
supported image formats: ['image/jpeg', 'image/png', 'image/gif', 'image/webp'].",
    "type": "invalid_request_error",
    "param": "input",
    "code": "invalid_value"
  }
}

What steps can reproduce the bug?

Uploaded thread: 019ab583-ce78-7473-aea9-fc8682c37f9a

What is the expected behavior?

I'm expecting codex to inspect the image in order to respond to the request I made

Additional information

_No response_