i play mei in stadium, and sometimes the coulder would roll of in random directions and be very hard to control. like instead of rolling straight head, it would sometimes randomly default to one side and the camera would be off or have no effect. i was wondering if it was only me, but my friend just played in group with me, and it kept happening to him too. so much it ruined his experience and he felt all 3 games we played were pointless because half his mei balls would just bug and not work. he is a pretty new player and i want him to have fun, and normally he does, but i was really sad to see how disappointed he was. he prob wont play anymore until this bug is fixed because he is a mei main and its ruining all his stadium matches. bliz please look into this.
edit: iv been testing it in practice range, and i think it has something to do with how fast your moving the camera when you cast coulder. sometimes it can even become completely uncontrollable and just go in a straight line away from the camera no matter the inputs you press to try and steer it. it doesnt always happen tho.