Tried this on two devices and only one has the problem, so I'm assuming it is a client issue. I can see the client screen and click certain things on the screen but the mouse cursor on my side doen't line up with what is selected on the client side. At first I thought I had no control, but then I noticed in some apps I could scroll with the mouse scroll wheel. Then I realized I could click but with about a 2" offset.
Any suggestions?