I am using PaleMoon for weeks now since FF Quantum pushed me away from FF.Are there any special concerns, tips, or customizations needed
I had no issues up to now. Some plugins do not work, but i do not feel this a problem, as there are enough alternatives.
What I particularly like is that the annoyance factor of PaleMoon is much lower than FF's one.
No Gtk3, no castrated menus, preferences etc. I do not feel like an gnomish idiot using it.