Space opening main menu (undesired)

I recently changed a button in my game to space (as was requested by some of my friends). It does its function but for some reason it opens up random canvases (all canvases closed with canvas.enabled set to false). There is nothing in my code that would result in such behaviour tho. I am quite confused. (also i got one input textbox maybe that causes problems? since it is left active after canvas closes for some reason) Also left ctrl and wasd has some reaction problems (when ctrl is pressed wasd doesnt react). Any solution to those?