I get a lot of visual artifacts when first opening Chromium on Pop!_OS with a 12th gen intel Framework laptop. Relatedly, odd black outlines will appear around different elements around the OS occasionally. I believe I’m on the most recent drivers and such, is there some other configuration necessary to fix this bit of cruft?
Run some hardware tests and make sure you’ve got the latest firmware installed from framework. I have never seen that on my framework laptop (11th gen Intel) and I’m also running pop.