As far as I know, Firefox Mobile doesn’t have a bottom toolbar so I’m not really sure what you are referring to there (at least, there’s no bottom toolbar in Firefox on Android where I’m using it), and the notification/battery area is definitely not part of Firefox. It sounds like your phone’s system UI is providing those elements, and it’s likely not really fair to blame problems with the system UI on Firefox.
Firefox on Android can be configured with the address / tab bar at the bottom - possibly this is what they’re referring to, but that also doesn’t dynamically change per site as far as I’m aware.
As far as I know, Firefox Mobile doesn’t have a bottom toolbar so I’m not really sure what you are referring to there (at least, there’s no bottom toolbar in Firefox on Android where I’m using it), and the notification/battery area is definitely not part of Firefox. It sounds like your phone’s system UI is providing those elements, and it’s likely not really fair to blame problems with the system UI on Firefox.
Firefox on Android can be configured with the address / tab bar at the bottom - possibly this is what they’re referring to, but that also doesn’t dynamically change per site as far as I’m aware.