Codex macOS app crops image previews, showing only the top portion

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

26.623.101652

What subscription do you have?

Pro

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

Image previews in the Codex macOS app are cropped vertically. Only the top portion of the image is visible, while the bottom is cut off.

This affects both:

• inline image previews/thumbnails inside the thread
• the opened image preview/viewer

The image itself appears to exist, but the preview container/viewer does not size or fit the image correctly.

<img width="727" height="327" alt="Image" src="https://github.com/user-attachments/assets/e5bef91f-c915-4e98-822c-56eebda848e8" />
<img width="474" height="351" alt="Image" src="https://github.com/user-attachments/assets/bc2d664c-2fa8-4eb2-acd1-2996f0be1074" />

What steps can reproduce the bug?

1. Open Codex on macOS Apple Silicon.
2. Use default app zoom.
3. Open a thread that contains image previews, generated images, or image attachments.
4. Observe the inline image preview.
5. Click/open the image preview.
6. Observe that only the top portion of the image is visible and the bottom is cropped.

This may be a function of image resolution / height in pixels but I'm unsure.

What is the expected behavior?

Inline previews and opened image previews should fit the available container or viewport so the full image is visible, with optional manual zoom/pan if needed.

Additional information

I found related reports, but none appear to be exact duplicates:

• https://github.com/openai/codex/issues/26851 reports image preview/lightbox cropping on Windows when Codex UI zoom is increased. This report is macOS Apple Silicon at default zoom.
• https://github.com/openai/codex/issues/29880 reports macOS image thumbnails showing placeholder icons instead of rendering. This report is about images rendering partially but cropped.
• https://github.com/openai/codex/issues/22952 reports broader UI clipping on Intel Mac. This report is Apple Silicon and focused on image previews.