I know, you can't use stkm in mobile, but if you somehow could, the inputs get "held down", same thing with stk2 and figh.

Example:figh aren't supposed to jump every time when they hit the ground, unless if the target is high up. But they still hop like a bunny when they jump the first time, even if there's no elevation between. There are spikes of heat, but if they land on the platform behind the spikes, they will hop in the spikes if there are any above. Plus, they'll Strech out too.