spacebar doesn't work for jump

Spacebar doesn't work for jump. I can change jump in settings and it works fine. I can also change spacebar to something else, and that works fine. I've had this problem for a while now, i even restarted my computer, but it made no difference.

I doubt the keyboard is the problem, considering it works perfectly fine in other games and in general. I have also tried to login with a different account and it had the same problem. I dont know if this is a bug or my pc's fault, but i cant find a fix.

i have also looked for a fix online, but i haven't found anything.