Mouse only works when I hold Right Click.

[Slaintemaith]

Mouse only appears and  works when I hold right click on it.
This seems silly.  What's causing it?

[Metric-SINISTER]

From my experience, this happens when you have 2 input devices, say....Joystick and Mouse. Your Joystick has one of it's non-rebounding buttons mapped to a certain function.

For instance, your Joystick has a non-rebounding button which can be either set to Neutral or (example) Button 12. Currently, this Button 12 is mapped to a certain function, and it's not in Neutral position. So the game is registering this Button 12 input as a constant input, overwriting the mouse cursor. Move it back to Neutral. If it doesn't have neutral, consider unmapping that button altogether