i am syncing no problem with librewolf.

about Multi Account Containers extension, i also recommend this. however, it must be said this extension isn’t compatible with android Firefox, probably not ios either but i haven’t checked.

i am still researching Firefox forks on android.

i love vertical labs! with their vertical tables and horizontal chemistry distillers! vertical laser reflector maze thingies! no more wasting the horizontal space like normal boring labs!