[dvogel]

That is interesting to me because that isn't my experience. I just tried the lock screen for example and I couldn't get any of tabs to reload, foreground or not. I'm on Android 10 running on a Moto G7. Maybe it's affected by vendor settings?

[utucuro]

Quite a few devices experience this though. For the record, I use an S9, and used to have 50+ tabs with no issues on older versions of Firefox - now I cannot have one tab remain open without a reload if I lock my phone with Firefox focused and turn unlock it a minute later. And that's with Firefox explicitly exempt from each and every kind of battery/memory etc. "optimization" by Android...

Here's the issue itself on GitHub: https://github.com/mozilla-mobile/fenix/issues/12731