Character won't jump if running left with up button down

Basically, I set up some custom controls.

The up arrow key makes the player aim up. Left arrow key makes him run left and right arrow key makes him run right.

The jump key is the space button.

My problem is, if I am running right with the up button down, and then press space to jump. He jumps.

But if I am running left with the up button down, and then press space to jump. He doesn't jump. ← Problem

This only happens if I'm running left with the up button down, if I release it he can jump fine.

I've tried disabling several events to check if they are clashing or something and they're not.

Any suggestions?

Here's a couple screenshots with my controls and animations:

imho, maybe you can change 1st keyboard all, 2nd gamepad

when still prototyping is it working?

mochiz

What do you mean?

Space don't work when you hold up and left. Change it to X or Z.

Oh I didn't know that. Do you know if there's any such problem with game-pads?

Thank you a lot Roal465!

It is a keyboard limitation only if I am correct (and not all keyboards have it).

Thanks for the information! Are there any similar limitations I should know about?