When you click the attack button, sliding the joystick will make the attack button unusable
steps to reproduce:
Click the attack button and then immediately slide the joystick after 0.2 seconds
Expected result:
The attack button will not work, requiring the player to release the movement joystick
Actual result:
The attack button will not work, requiring the player to release the movement joystick
This issue is being tracked at MCPE-180782.