UI is laggy and losses state wrt selected thread

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

26.313.41514

What subscription do you have?

Pro

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

UI is laggy and losses state wrt selected thread
<img width="753" height="442" alt="Image" src="https://github.com/user-attachments/assets/3141d2b5-7ab9-465d-8ce8-37ff2d9b70ae" />

What steps can reproduce the bug?

Uploaded thread: b734f3b2-3c1a-468d-a9c7-d9119b024473

What is the expected behavior?

_No response_

Additional information

I have very beefy hardware, this shouldn't happen (Ryzen HX 375).