Are you releasing the arrow keys? Because if so, that does sound like a bad bug xd. How the dash is meant to work is that you hold down the arrow keys to get your direction, and then when the keys are released you do your dash attack. Not sure what could be causing the bug though. (Also, do you know why the windows build flags as a virus when downloading? It's just MiniMicro 1.2.2 plus the user.minidisk and an edited bootopts)