Just played the update, I can confirm the input spam issue is gone. Attempting the same thing now just cancels both inputs.
Everything else also seems fixed, except maybe the weapon projectiles colliding on a wall behind you (laser blaster still does it. and now the bow & arrow does it too! It seems to have been fixed for the plasma ball, though.)
As always, thank you for your hard work! 🙂
(Big Boi is okay, now he knows not to play with fire)