When playing on iOS using a DualShock 4, both analog sticks drift to the point that the game is unplayable. This started abruptly and has been reported to happen on the PlayStation edition of the game too, but I don't play on the PS version so I can't say I've experienced it myself. The controller is certainly not the problem as no drift occurs on any other game. Support tickets have been opened for this issue for over a year and it has never been resolved, yet the game cannot physically be played because Steve doesn't stop spinning around and walking of his own accord.
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We're tracking this issue in MCPE-18432, so this ticket is being resolved and linked as a duplicate.
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