(09-09-2020, 08:43 PM)rich2005 Wrote: no idea why the monoprice is not 'seeing the shift' key
I use the shift on the keyboard. I know that it must "see" the shift key, because that's what makes the dragged line appear. It also registers the "click", but it doesn't make my line.
I made a demo gif just like yours. "Core Pointer" is the mouse.
https://i.imgur.com/lv40OWB.gif