I play on my samsung tablet with a key board and mouse and everything works fine, except the space bar ( jump button ) it will work for a little bit and then just randomly stop  all other keys work perfectly with no flaws but after a minute or two the  game just stops recognizing  the space bar, i thought it was key board issue, i thought something was wrong with my keyboard but the space button works perfectly out side minecraft, i even tried a few difrent key boards i had but all produced the same result, space bar stops working in minecraft after a few minutes,  i checked the keyboard control settings in minecraft and everything checked out okay, so i think theres a bug. also the mouse is bugged too, it disapears like it supposed when i enter world, but when i leave it doesnt come back or show up again