[Codex App] Full-screen image preview is partially covered by the chat composer

What version of the Codex App are you using (From “About Codex” dialog)?

26.901.20858

What subscription do you have?

ChatGPT Pro

What platform is your computer?

No response

What issue are you seeing?

After a recent Codex App update, clicking an image opens it in a large full-screen preview.

However, the chat composer remains overlaid at the bottom of the image viewer and covers part of the image.

As a result, the full image cannot be inspected, especially for portrait images or long screenshots where important content is located near the bottom.

Previously, images were displayed in a side panel next to the conversation, and the entire image could be viewed while keeping the conversation visible.

The new behavior is significantly less usable because:

1、The conversation is no longer visible while inspecting the image.
2、More importantly, even though the image viewer occupies almost the whole window, the bottom portion of the image is hidden behind the chat composer.

What steps can reproduce the bug?

1、Open a Codex conversation containing a generated or attached portrait image.
2、Click the image thumbnail to open the image preview.
3、Observe the bottom of the image.
4、The chat composer overlays the image and hides part of it.

What is the expected behavior?

The entire image should remain visible and unobstructed.

Ideally, the previous side-by-side image preview should be restored so users can inspect the full image while continuing to read the conversation and write prompts.

If the full-screen viewer is retained, its layout should at minimum reserve enough space for the chat composer instead of placing the composer over the image.

Additional information

This issue is related to #38858, but this report focuses specifically on the image being physically obscured by the chat composer.

Start by reproducing the issue in the Codex App with a portrait or long image, then trace the full-screen image preview and chat composer layout. Done means the entire image remains visible and unobstructed, while the existing reproduction steps confirm the composer no longer covers the preview.