Apple fix low battery warning in iOS Facetime

Noticed this since at least iOS 14 that FaceTime does not warn about low battery when using it in landscape mode. None of the instructions appear (at 20% or 10%). It has not been fixed in the several updates of iOS version 14 and now iOS 15 has already reached 15.2 and the bug still exists! Fix this Apple, this isn't something that is  difficult to fix.