Hi Alexandros!
This is a known bug in the Glass layout. The branch label in the diff header shows a stored snapshot from when the conversation was created, rather than the live git branch, so it doesn’t update when you or the agent switches branches externally. The PR detection has the same root cause – it looks at the stored branch association rather than the current one.
A few other users have reported the same class of issue:
The team is actively working on improving branch visibility and management in Glass. For now, switching to the Editor view (which you can do from the layout picker) gives you the standard branch/git UI as a workaround.