Waterfox has historically tried to maintain functionality that Mozilla isn't interested in maintaining -- and coming out months or years later giving up on those efforts. The issue there seems to be that the company that they had sold to wasn't making enough money to justify increased investment (or they just didn't care). If maintenance is going to struggle by moving away from Mozilla, I don't get the point.
With LibreWolf, I just don't agree with their choices. My own take on web privacy is mostly aligned with Mozilla's -- you can read my tutorial if you like - better privacy by default, but without breaking pages. I'm generally not interested in breaking pages, and I don't think most other people are either.
While I am not entirely sure of what you are talking about, it sounds like you are trying to define shortcuts or overrides in X11/Xorg input settings for your input device. My guess is, based on the age of the Firefox port on *nix, and the fact that X is basically dead upstream - is that even if this is a valid bug, you probably won't get a fix very quickly.
Why? It isn't Wayland and I'm guessing the abstractions here are cleaner.
If you want to find the bug, you can run a mozregression to find what broke it (using 104 as your last known good release and 115 as your bad release).
You can reuse your profile to test this pretty easily if your issue is more easily reproduced with user data.
We recommend not using arkenfox user.js, as it can cause difficult to diagnose issues in Firefox. If you use arkenfox user.js, make sure to read the wiki. If you encounter issues with arkenfox, ask questions on their issues page. They can help you better than most members here, as they are the people developing the repository. Good luck!
I had used Temporary Containers, but it hasn't been updated since February 8, 2021. Not actively monitored for security by Mozilla either so stopped using it. That addon was a perfect experience though for what I wanted.
Code doesn't rot, so you can use the extension. Is it not fit for purpose? Are you aware of any security issues? What is the scope of impact if there IS an issue?
