Native image generation not triggering when ChatGPT App is selected

I’m seeing what looks like a tool-routing issue when a ChatGPT App is selected.

Issue

With @PrintA selected, I asked:

Create an image of a cute dog I can print on a shirt

Instead of using native ChatGPT image generation, the assistant generated a PNG using Python. When I then asked it to “use regular image gen,” it said image generation was unavailable in the chat.

Expected behaviour

ChatGPT should still be able to use native image generation while an app is selected, then pass the generated image into the app.

Expected flow:

  1. User selects @PrintA
  2. User asks for an image
  3. ChatGPT generates the image using native image generation
  4. The generated image is passed to the PrintA app/design studio

Actual behaviour

Native image generation did not trigger, and the assistant behaved as though it was unavailable.

Question

Is native ChatGPT image generation supposed to remain available when a ChatGPT App is selected?

If yes, this seems like a routing bug. If no, what is the recommended pattern for apps that need generated artwork as input?