As the title says. Latest build, tested on several characters. After alt-tabbing and keeping the game on the background for a couple of minutes an attempt to get back results in a black screen with a visible cursor. Alt+F4 or any other force close ways work, but that’s mildly inconvenient 
UPD
Borderless windowed mode solves the problem for now.
+1, have the same issue. Never encountered it before.
Got any windows events at the time?
Are you opening anything else that’s fullscreen while gd is minimized?
I ask since I get the same thing in the live build, but with a different cause: sometimes after expanding anything to fullscreen in a browser, my gfx driver crashes.
Nope. Tested again with all the same apps I had on atm. Discord, Chrome (youtube and yt music in particular, but nothing fullscreen), Telegram. The game just went black after 3-5 minutes.
Strangely enough, it’s not dead, cursor works, I could click on some vendor (the icon changed) and hear his phrase, but apparently the character couldn’t move. Like it just unloaded the world somehow.