I've encountered the problem, that I'm getting all the chat notifications of other users with the same but different name in my top bar inbox.
Recently a moderator super pinged a user using his user ID. I am an active chat user in the room the ping occurred in and I have the same name as the user that was pinged.
I also received a notification in my inbox:
You can find the chat message here.
The chat message and the history of that message state that @sven was the target of the notification, which is why I assume I got a notification, however since the moderator super pinged the user using his user ID I do not believe that I should have received a notification.
Let me know if you need further information to locate the bug.