In multiplayer, when you're in map view and someone pauses the game, you cannot do anything.
If you have pause button unbound, for this ESC key should work like pre 2.0.
[2.0][PC (Windows)] Game becomes unpausable when in map view
Re: [2.0][PC (Windows)] Game becomes unpausable when in map view
Thanks for the report, this is a duplicate of 116472.