When you land from a jump and immediately jump again, it's inclined to move in the same direction you were already moving, as opposed to the keys I'm butterfingering in another direction. It's more realistic the way you've done it, but for some reason I was expecting to be able to change my direction completely, or at least wanted the direction of the jump to match the direction I press.
My guess is that your jump takes the direction you're moving in when you press space to set the direction of the jump, rather than the direction inputs from the player.
The way your character handles is absolutely something I could get used to, and is part of the flavour of your game, I think I've just been playing a few too many precision platformer submissions.