Oddly Specific Bug

I’m working on a project. Specifically, this blueprint, which is a control script for a sprite-based top-down RPG character. So far, it can move with the arrow keys and jump with the space bar, and it all works perfectly except for one thing: When the character is going northwest, it can’t jump. It just doesn’t work at all. Every other direction is fine. The problem is probably just some tiny thing I missed, but I have no idea where it is. Any help?

EDIT: I just did some testing, and if I use other inputs for up/left or jumping, it works just fine. The glitch also happens even if up and left aren’t mapped to anything. Engine problem?

Bit of a long shot, but if you have a basic keyboard maybe you’re experiencing ghosting?