Reported by @lament inlet
Bug Report: The conversation threads title ends with unknow symbols.
`Steps to Reproduce`
Start a conversation.
Wait for the title generated.
Some threads‘ title will ends with unknow symbols that I'm not ever typed in the conversation.
`Expected Result`
The threads title shouldn't has unknow symbols.
`Actual Result`
The threads title ends with unknow symbols.
`Environment`
Windows 25H2 26200.8246. Codex version: 26.409.61251