system
A chat on subreddit /r/pcmasterrace
human
you can set it so it actually does sync that extra stuff

first set `services.sync.prefs.dangerously_allow_arbitrary` to `true`

Then make a `services.sync.prefs.sync.your.pref.name.here` and set it to true

That pref will now sync, but you need to allow arbitrary on every device
gpt
Might be an unpopular opinion here, but this stuff is exactly why Firefox wil never be the choice for the average user.

No way I'm going to explain this to my SO or my elderly parents who just want to "have the same internet on my phone and my computer".