I have an absurdly irritating issue with my Surface Pro 3 that is intermittent, and I've never noticed a cause for it. Sometimes, in the middle of use, my Surface Pro3 Touch Cover touchpad enters a bizzare state: The touch screen works normally in all respects. Moving the mouse mouse pointer with the touchpad works fine. Clicking by actually depressing the touchpad 'buttons' works fine. However - if I TAP (not depress/click) the touchpad to click, the first time I tap, it 'sticks' as if I were holding the button down. The second time I tap, it acts as if I had released the button, and depressed it again, now dragging whatever I had selected. The third time I tap, nothing happens, it stays in that state, unless I double-tap in which it releases and goes back to normal. If I physically click/depress the touchpad, or touch the screen, it also releases the stuck state. Ive tried everything to fix it - disconnecting the keyboard and reconnecting does nothing. Disabling and re-enabling the touch cover does nothing. The only thing that gets it out of that state is a full reboot. Which is oftentimes extremely inconvenient when I'm in the middle of work with a lot of windows open. Googling this issue turns up nothing. Has anyone seen this before? Any suggestions? I dont even see a setting anywhere for a tap and drag, which is something I saw in an IBM Lenovo forum regarding their lenovo touchpad. But the surface touch cover doesn't have a tap and drag setting, at least nowhere that I can find. Help?