The game will be stuck on a black screen with no visual feedback and no responsiveness if users exit the game during a battle.
This was reproduced 5/5 times on build 143031 (picked up build number from the download URL).
The only workaround i've found for the issue is deleting the save game either through the options or by starting a new run.
Operating System: Windows 10 Pro 64-bit;
Processor: AMD Phenom(tm) II X4 975 Processor (4 CPUs), ~3.6GHz
Memory: 12288MB RAM
Available OS Memory: 12288MB RAM
Page File: 6591MB used, 17984MB available
DirectX Version: DirectX 12
Card name: AMD Radeon HD 6900 Series