Reproducibility: Sometimes --> Always (at least once every time I play).

I've been having this problem the last days. I log on to a server, then I run around for a bit until I get teleported back to where I spawned in. After that I can't move or press escape or use any keys to quit the game. Which means that I have to quit the process by tabing out of the game and then restart and log back in.

This issue occured to me for the first time, about three days ago. I have the problem on some of the servers. But after I've been switching around for a bit, it "disappears".