[BUG] When connection is lost while the game is loading, you don't get warned about that properly

I noticed this two times. When the connection to the servers is interrupted while the game is loading, you can see no warning and the loading screen acts like everything was fine (except it doesn't update).

Only if you ALT-TAB you'll see an error message. So if you're reading a book, you might not notice for like 20 minutes.