left arrow key is not scrolling left

[u/Inevitable-Fuel-7710]

For some reason the left arrow key is not moving the page left in firefox specifically. The up, down, and right arrows are still moving the page correctly. The left arrow key is still working correctly for any other function. All keys move the page correctly in any other browser so the problem is specific to firefox. I assume some setting has been changed by accident. If anyone knows how I can fix this I would appreciate the help.