Bug in Discord that makes some pop-outs stay there.

I logged on to one of the servers I'm in, and the server is a very big server, so the sidebar that has the applicants is constantly moving. I accidently clicked on someone, and I though if I tap out it just would take it out. It was frozen there. I can't message them (to try and take the window away) or anything. It's just... there. 

P.S., to protect Privacy, I'll only show the servers and usernames if discord privately messages me.
If there is any way to get this annoying pop-out out of the way, it would be amazing : ).