Same problem: Shaft sniper is the worst now, about 2 days (starting ~4/9/2015) Symptom: 50% turret works normal, 50% when entering sniper mode turret locks up, down key well hold turret from drifting up, releasing down key will allow turret to continue drift up. up key will continue turret up but then enables the down key to work properly. Basically to resolve if turret locks left press left if it lock down press down if lock up press up to resolve the problem for the moment. But this is a very bad handicap for shaft. non-sniper mode turret can get locked in spinning and can be resolved by momentarily pressing the key in the direction of the locked spinning to resolve. It is not "sticky keys" sticky keys is off. It is not "alt" could not confirm any effect from "alt" Behavior is the same in chrome and explorer. Behavior is the same in full screen and not full screen. In explorer, mouse control is not enabled. Chrome does not have mouse control option. I suspect this is a bug related to implementation of the mouse feature. I look forward to a resolution from the tanki staff. Thanks.