Yup. Often these User agent switchers just do the trick. But some companies design their stuff to break on FF. (I’m looking at you Microsoft)

Good Bot!

Death by cheese got real!

Ohh. I never had this problem when I was using MIUI. IDK how it works.

Which brand is your device from? Maybe I could find something useful.

Weirdly I haven’t had this issue much yet. I have had issued where the tab would kinda / break in sense that the tab would become useless and nothing can be done (eg. It will just show blank or some other tabs content)

Maybe try whitelisting Firefox from battery optimisation. It should help as some OEMs do aggressive background kill for apps.