It's the same, I panicked at first then found the setting thanks to a fellow commenter. Search my name in this thread and I detailed it in response to someone else.

Sibling says it's working in Nightly -- I'm using the regular stable release on Android and it's there. Haven't even updated it for a few weeks at least. (I just didn't know it existed before now, I was using Lockwise.)

All in all it makes sense tbh - Lockwise used FF account and sync... Who would have one with synchronised data and not be using FF on their phone (esp. Android) anyway?