Did a search for this bug but didn't find it. Clicking on some Menu Items resets the mouse pointer, specifically the "Next" button in the starting tutorial. Also a few options in the Inventory do it as well but only under certain circumstances. Oddly, the Tutorial "Next" button doesn't reset if the Inventory is up.
Example: http://screencast.com/t/zCfMiLUl0J
Example: http://screencast.com/t/zCfMiLUl0J