Some user experienced problems with scrolling, the scrolling position is stuck or the scrolling is not smooth. This is due to some phone model that have problems with the touch screen while the phone is charging due to instability of power supply.

To check this issue just enable the Developer options in Android, enable the option to show the taps on screen and/or the tap coordinates. Then you will see that when the phone is charging on the screen it detect wrong taps positions.

To avoid this issue on these phones just do not operate the App when the phone is charging.