Operating system: x64 bit Windows 10
Graphics card: Nvidia GTX Gefroce 1050Ti Notebook
Version: Blender 2.8 Beta Release
Short description of error
ctrl+z does undo as normally. When working fora long period of time, ctrl+z randomly would close the application and losing the unsaved data it was running. I was working with some models. Happened to me 3 times in one day.