So far I can only get this behavior to happen with the Wang Edit Control (included with Windows for imaging purposes).

1) Open a new form.
2) Insert the OLE Wang Edit Control.
3) Click on it once and release the button.
4) Move your mouse

At this point if you move the mouse, the control moves with it even though you are not holding down the button. It kind of sticks to the mouse. To release it you must then click the button again.

No big deal but could it be hiding a more serious problem? This behavior does not occur in VFP5.