FF4 screen reacting strangely to touches sometimes without even touching it when using one-handedly

[jaxom]

I’m holding the phone in my left hand and move my thumb over the screen without really touching it and the screen reacts by moving/scrolling. Is this some known behavior?

[Volker]

Yes, may happen, see e.g. here:

Ghost inputs on FP4

I did experience ghost inputs because the phone’s touchscreen is too sensitive. It seems that sometimes a touch is registered without actually touching the screen yet. But what you describe here seems a totally different issue I haven’t experienced.

[jaxom]

Thank you for the reply! And yes, I think it has something to do with “palm detection”. When I move the phone so far as possible away from the palm onto my fingers area only the strange behavior gets better. And it also is much better now as I am using the soft case.
But I am wondering why a thing like this “palm detection” still can be an issue with modern smartphones.