Mermaid diagrams outline not being occluded by entry form properly

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

26.707.30751

What subscription do you have?

Pro

What platform is your computer?

Darwin 25.4.0 arm64 arm

What issue are you seeing?

<img width="719" height="355" alt="Image" src="https://github.com/user-attachments/assets/0a0a7334-04d3-4d95-94d0-fbb0adc7b609" />

What steps can reproduce the bug?

ask to generate a chat session in chatgpt codex that has a mermaid diagram

What is the expected behavior?

outline should be fully occluded

Additional information

_No response_