Just chiming in to say I’m having the same issue (Windows 10, 4.13)
Because I’m using my display’s audio device, when the display goes into sleep mode or I swap AV inputs the engine freezes and is unable to be brought back into focus. The window does not become “unresponsive” and the debugger continues as if nothing was wrong.
I’d be perfectly happy with losing audio and having to restart the editor when my audio device is reset, but having it lock up is a real bummer.
@Minus_Kelvin Is your fix in 4.13 now or coming in 4.13.1? Can you post the commit id as well? Thanks!