I am using a late 2019 16" MacBook Pro. Whenever I open and play Kerbal in full screen mode, the screen glitches and gets covered in red lines. Attempting to screen shot it clears the problem, but as soon as I click something again, the screen glitches again. I've posted a link to a google drive file of a short video of it occurring. I deleted all my Kerbal files some time ago, mods and all, so to my knowledge this is a fresh install of Kerbal. Whenever it is not in full screen mode, I do not have this problem.
https://drive.google.com/file/d/1cjeP85_IcKf1xYhwud3Qj6_ESqT35OES/view?usp=sharing