Tab Group "All" shows two active sessions.
Tab Group "Client A" shows one active session ("A").
Tab Group "Client B" shows one active session ("B").
Steps to reproduce:
Step 1: Click on Tab Group "Client A"
Step 2: Click on session "B" in the tree view/navigation
The session is not switched to "B" but stays on session "A".
Switching between sessions should be possible and Tab Group should be switched.
I was able to reproduce your issue.
A ticket has been opened to our engineering department.