Φόρουμ υποστήριξης - Firefox

From a security / QOL pov I'd like to disable an extension on some websites, and was wondering if there were any methods to do this?

I searched this question first through reddit and the support site and found similar questions with no updates asked between 4-6 years ago, wondering if there's been a method implemented yet or if it's still not possible.

Thanks!

firefox is not prompting the primary password login dialog box and not even providing me "saved login"

Even when i tried to open password in settings so that i can manually copy paste them, it ask me to log in first as shown in picture but when i click on login, nothing happens, it does prompt primary password login dialog box.

as shown in picture below, even if i click login, it just does not work.

p.s tried clearing cash and cookies.

Recently, when I try to play a video on YouTube on Firefox, there is a flickering brightness effect (some aspects of the video seem to flicker bright and dark quickly) which is distracting and makes it difficult to watch anything. The effect persists even when launching in troubleshooting mode, and disabling hardware acceleration and restarting appears to have no effect. I have also been unsuccessful refreshing Firefox. Nevertheless, this issue is absent on Safari and Chrome when watching the same video.

Watching a solid colored video like this helps see the issue best, if it is happening to your device: https://www.youtube.com/watch?v=hJmFYZEcpZA The brightness switch is visible even when pausing the video.

When I find the same video two different places (ex: the Apple Sept 12 Event on Apple's site, versus on YouTube) only the YouTube video has the issue. However, I can't find any settings to change on YouTube to help this.

Chrome scrolls to element while Firefox doesn't for this URL with # :

https://www.service-public.fr/particuliers/actualites/A15610#titreChapitre_-5776306477855185115

There is an element with id "titreChapitre_-5776306477855185115" in the page (chapter "Personnes ayant un test de dépistage positif" which means "People who test positive to Covid", Chrome will scroll to this chapter (well, at least 60% of time it auto scrolls to the element) while Firefox will always display the top of the page.

Firefox is slightly better and more similar to Chrome on the english version for some reason : https://www.service-public.fr/particuliers/actualites/A15610?lang=en#titreChapitre_-5634635573997558496