So I guess someone from Mirahzeze updated the extension, and the fixed position in dark mode now works even when using Firefox, which is great...except this change seems to have caused an even worse problem.

Okay I see, thank you for the explanation and for working on fixing things!

I'm not exactly an expert in how extensions work, but if there's been a fixed added, does that mean the extension needs re-installing or something else be done for that update to take effect? I ask because it seems like nothing has changed, and the issue still happens on my wiki with all skins and all "fixed" elements, not just when I use Firefox but also in Google Chrome.