When I try changing the background, and click apply, the background doesn't change at all. I've tried this multiple times. I read somewhere that you have to press CTRL + B to toggle the background, but it still doesn't do anything after applying the background, or before applying the background.
Any help appreciated, I just want to change my background
EDIT: Forgot to mention this is about Universe Sandbox 2
EDIT 2: Solved, was on an old version