Codex conversation titles sometimes contain stray symbols like 」}

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

26.305.950 (863)

What subscription do you have?

ChatGPT Plus

What platform is your computer?

Darwin 24.6.0 arm64 arm

What issue are you seeing?

Codex sometimes generates conversation titles with extra symbols like 」} appended to the title. This happens even when the first prompt is plain natural language and does not contain those characters. It looks like a title generation or text cleanup/rendering bug rather than intended UI behavior.

What steps can reproduce the bug?

1. Start a new Codex conversation.

1. Send a plain natural-language prompt in Chinese.

1. Wait for the title to be auto-generated.

1. Look at the conversation title in the sidebar.

1. Notice that stray symbols like 」} sometimes appear in the title.

What is the expected behavior?

clean auto-generated titles

Additional information

_No response_