If you go to server browser and try to join a server which you then cancel for some reason (example it being “match is ending” state etc.) then when you come back to server browser and try to look some other lobby info the game will still try you to put you into server which joining you cancelled.
Doesn’t sound like big problem but I have noticed that if you all things consideration like finding fitting game, playing in specific maps, match being on start/middle and the problems that server browser “lies” how many people are in even though server is full this just adds another time consuming thing to the whole process.