Sometimes I won't see a server/servers on server list (mainly in "Friends" tab), but it should be there (my friends are on server and it's not filtered out but filters). However if I will click on server list on first position (so place where it should show up) it's actually selected and I can connect to it. It looks like name, version and all other info is not showed (letters are not displaying) on server list so it looks like list is empty.