Holding button down on tablet too long is problems

this appears to be Wacom specific. if you keep the pen held down for too long, or not hard enough Rb6 effectively releases the mouse button. this leads to all sorts of weird problems in dragging moving stuff in edit and fusion. see attached screen capture for bug in action. While its worst when moving spline points in fusion, it also causes problems in the edit TL where if you don't complete a drag move edit fast enough, clip goes. back to where it was. 10.13.6, Wacom 6.3.29-6

https://www.dropbox.com/s/idp964k1cr4do ... 4.MOV?dl=0

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