Having a weird problem with the Sanctum demo (unless it's supposed to do this, but I don't see why it would).
Playing the tutorial, and when it asks me to aim at the blue square on the ground, I move the mouse to point at the ground, and the game automatically starts moving the crosshair back up towards the sky again. I've even tried letting go of the mouse - the crosshair will just move upwards on its own.
I've turned off mouse scrolling and mouse smoothing, and turned down the mouse sensitivity, but none of them seem to have made any difference.
Am I just being stupid and it's meant to do this? Seems strange if it is.