I Can't Aim Up

I can aim down, but not up. I've extensively tested the joystick, and it isn't the problem.

This is causing a lot of issues for me, because I can't fight anything above me, or hit objectives without finding a higher nearby place to climb to so I can aim at it.

I've been all over the settings trying to figure out what's wrong, and I'm stumped. Does anyone know a way to fix this?

Edit: restarting the game fixed it.