Bug happened after inspectincg one star system and going away from the computer for around 10 minutes.

When I came back the game was stuck in view of that system. It was still runing, I could make another turns, was able to visit different windows using popups and/or top-left menu, but while trying to get to general overview of the map it was impossible.

Restarted game and was able to play normally.

Tried to repeat the conditions of occurence but was unable to make it happen again.

I play on asus laptop:

Win 10, i5-6200u, 8gb ram, gtx 940mx, ssd.