Codex adds foreign characters to thread titles

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

26.715.72359

What subscription do you have?

Pro

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

Here are examples of a couple threads where I was writing in French, but it added a Chinese/Japanese/Korean character to the end of the generated thread title:

• Corriger la détection des nouveaux用
• Diagnostiquer l’écran vide après un分

It looks like there is a strict limit for an automatic thread title around 36 characters, and when the LLM responsible for generating these titles runs out of characters, it starts abbreviating into a foreign script. That's kinda smart but not helpful when the user doesn't understand the other language 😅

What steps can reproduce the bug?

Happens randomly, on ~1% of thread titles in my experience.

What is the expected behavior?

no mixed languages in thread titles ; I'd rather have a longer title and a tooltip

Additional information

_No response_