Hardware acceleration - was on, turned it off, same problem
Copying and pasting to outside programs appears to work. I opened up MS Paint and it pasted to a blank document. Oddly, opening up one of the images that refused to copy/paste in Affinity in MS Paint and copying it from there into a blank Affinity doc worked (sorry if I worded that weird, I hope you understand what I mean).
The reason I specifically rasterized them was because when I was searching for answers, that came up I think twice, so I wanted to prove that wasn't the issue, even though, yes, it was a pixel image! Just wanted to make sure I didn't waste anybody's time thinking that could be an issue since I saw it a few times.