I got the weirdest bug ever. I did some weird movement with the camera and then half nuke explosion sprite was shown on the map, my units were idle and/or slow-mo like if time had stopped and some bugged UI circles were randomly shown as well. I was not able to give orders nor chat, just like if I were catching up.
I waited a bit and then somehow the problem fixed itself and my game catched up to the current game state.

EDIT: Just watched the replay and the bug didn't happen again. I don't know how to reproduce it either so I guess this will be lost like tears in the rain XD