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7:33 AM
@Knight From my experience, the "last seen" in the user's profile seems to be a more reliable indicator than the "last seen" in the chat profile.
I can also confirm from my own experience that often when I click leave on some chatroom, I am then still shown as present in that chatroom.
So the fact that I am shown among the users currently in some chatroom does not always mean that I am there.
The fact that leave does not always work was also mentioned in some posts on Meta Stack Exchange: Leave a chat room, but not really and Not able to leave a chat room.
 
7:53 AM
@MartinSleziak Thanks for replying.
 

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