I seem to have stumbled on the same issue. Dell Laptop Precision 75010, Two screens (extra Samsung display 2048x1152) , Windows 10 Pro.
My mouse pointer is still visible but the click action is registered in CC at like 10/20 pixels above where my pointer is hovering.
Also my menu bar is not visible. BUT if I click my mouse pointer a couple of pixels below where the menu bar should be i can access the menu bar. Also when in full screen mode, the menu bar is visible and registers the mouse click where my pointer is hovering like it should.
It looks like this: I clicked where the mouse pointer is visible in the screenshot. It looks like it has to do with scaling or something.