Hello,
When I try to leave a workspace, the notification appears correctly at the top right confirming that the action has been taken into account, but I remain in the workspace which seems impossible to leave.
Is there a specific method for this?
Sincerely.
Hello Thomas.
This is indeed a small bug that we will take into account right away.
#231771
In the meantime, you can go through the administrator of this workspace (whom you can see in the list) to make the request and have them do it for you.
Thank you for your (first) contribution. 
Feel free to browse other posts to catch great ideas or new uses!