the controls are normal to me, kawaks on windows always had the worst controls i saw.
Some titles like KOF97 have already from the arcade awfull controls, which is weird.
Try out to play Garou, it has normal controls, just as it should be.
And heh, if your stick is moving constantly ur stick was hold to the right when initializing the emu, as it reads the centre at that moment (or so i think)