The touch circle gets behind the control button(jump, sneak, joystick, etc) and will move the character screen instead of the control causing screen flickers and unwanted movement
MCPE-229820
Dpad movements are not registered because the touch circle or touchscreen input is behind the control buttons, causing interrupts on gameplay
Resolved
Duplicate
4
keep in mind that this bug has been around since BEFORE the release of the new touch controls