No, I’m afraid I doubt these two issues (this thread, and thread Mouselook and my tool windows ) are related. In the latter case, it seems MousePosition is OK, but the “release” event is not reported where it should. This is something else than the error in this thread, when MousePosition was sometimes wrong (causing mdRotate to not work).
The things I’ve done here will likely have no effect on what you reported in Mouselook and my tool windows .