Resolved: Global playerlist errors
 

I have most of the servers expanded in the global playerlist so I can see if my buddies are on different servers. After a while, they automatically collapsed, so I had to expand them again. Collapsed again after a while, and then when I went to expand them again, several servers disappeared from the list (but they were there in the F8/server connect menu).

Yes I noticed that too. also the gide list, but in that case they will show again by klicking refresh. There should be also etablish a refresh button for the serverlist.

Eventually the serverlister was restarted (which manages the global playerlist)