This old thread about current no reverse sounds like a similar situation, might have some relevance
To spoil the end post, in that case it was how Current No Reverse works causing throttle to default on, since it seems the middle position of a bidirectonal thumbwheel is half throttle in that mode.
Seems like a mode that wouldn’t be super useful for eskate if I’m understanding correctly - since it’s completely unipolar you’d need a separate brake mechanism of some kind even if you don’t want reverse.