well, the instant-sync is indeed really a point. to use the mozilla-account to work on multiple devices is helpful, but a pain to use sometimes. often I end up to enforce a sync manually and even then I’ve to re-check, if the sync was successful in t...
I observed that is, because the groups are saved at first in recovery.jsonlz4 - and that is not always written in an instant after changes are given. and if the firefox is closed, it is transferred to session.jsonlz4.
It doesn’t show from start – simply open 2 tabs and drag one over the other. Had the same "trouble" on Termux with X11 and the desktop-FF. – Cheers!And check the used FF-version. current version is 140.x. maybe your distribution is not using the LTS-...
and please - that not only on Desktop-Firefox: on mobile too… - the current incarnation (shown on 139.0.4) is good - but without sync it is not helpfull… – well not in the way to "organize" quickly temp-groups. for more permament solution the folders...