First of all, I'm on piefed.zip which uses PieFed v1.8.0-dev - apparently a sort of beta?

I have, over time, noticed small UI hickups mostly related to tooltips misbehaving: not showing up when hovering, or getting stuck at the top/bottom of the viewport.

I have noticed that Chromium seems to do better here.

Since many fediverse users use Firefox et al. for privacy reasons I think maybe we should discuss this, compare notes.

I'm using Librewolf 153.0.3-1 btw. with uBlock origin

Then there's also this which does not happen on Chromium: Some user apparently chose to use a serif font for their personal style, which results in my comment being completely serif as well, as well as other comments surroundings. See if you can reproduce it.