Link it used to happen with me on the steam version. It isnt whether it is standalone or not.
Connor, you mean when you open the game a second 'client' window is opened, and completely blank / uncloseable? I had that issue, it was for some reason the hardware I was using as it was outdated, and quite possibly the software I had. After I upgraded to a new computer, I stopped having the issue. I am not saying to get a new computer, but check to see how dated your stuff is.
I get the same problem and I'm on windows 7, I would not call it too outdated just yet but this is quit an annoying glitch/bug.
I also have it and I got a very bad laptop. Happens since 4.82 on steam and normal version.
It doesn't make me lag but it's a little bit anoying.