LFS crashs almost everytime for me when i exit from full screen. and usually results in me having to restart my whole pc.

Never had this issue with my old PC, its just my new one

How do you exit from Full Screen? Alt+Tab? Windows key? Alt+Enter?
Afaik only Alt+F4 works properly.

usually by the "exit" button on the main menu when using full screen.

but i just had a test, and if i alt+f4 out of full screen and click the x button, all works good