Brave shows a thick black border around divs (previously accidentally deleted)

This just randomly started happening today. I’m specifically seeing it when in a FoundryVTT game. I would love to post an image of it but that doesn’t seem to be an option. I found a similar topic where people were complaining about this: Brave is adding a black border

… so it’s not just me.

This is on Mac OS Ventura 13.4.1
And Brave Version 1.52.129 Chromium: 114.0.5735.198 (Official Build) (arm64)

btw I really hate this community website – awful UX