To start with, I really enjoy the new dark mode high contrast theme. It’s much higher contrast without feeling over the top, and already after just a few minutes it feels pretty normal.
That being said, I’ve noticed a few small issues.
Suprisingly, this doesn’t get flagged by lighthouse, even though I don’t think it’s within contrast guidelines.
Inactive: Can barely see the x
Active: Much better
This might be because I’m on a 2K screen, but I was noticing a rough border (and also minor chromatic abberation) with the stroke around profile images.
That’s all I’ve noticed so far, but I’ll add to this thread if I continue to find things.