Having switched to Zen Browser, something I miss with Firefox was its stability. I find myself looking up Zen browser bugs and workarounds too much. This is the 2nd or 3rd time I’m downgrading Zen versions due to a bug in the stable version, I never had to do so during my years on Firefox. Devs on Github making an app on their free time have can’t spend as long on QA as a multi-mullion dollar organization.
The only time I did was WAY back during the launch of Firefox Quantum. It was a huge back-end change pushed overnight to the main branch, breaking most extensions including one I similar couldn’t live without at the time. I even switched to PaleMoon for a while until everything sorted itself out.
Been using LibreWolf for almost 2 years now which does a good job at gutting all the parts of Firefox updates I don’t want.
I know it was a long time ago but I would avoid Palemoon like the plague going forward. They don’t seem to care about security and the browser is highly vulnerable.