Thanks guys!
@SimplSam
This sounds closer to what I am experiencing now. But since updating the driver, I no longer have to release the modifier key after initiating zoom/rotate with the pen's rt-click... I can now click to get out of the resizing of the docking edge by clicking too. Not sure what changed since that didn't seem to be helped by the updated driver:? Previously I was clicking all over the place with both pen and mouse and couldn't get out of resizing.
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@GreenLaw
I'm referring to the section along the right side of the screen that contains the Style and Layers panels and dragging the left edge of it that separates it from the canvas and timeline. I tried closing and undocking the Style panel but got the same results (also with the tools palette)... I'm running on a 15.6" at 1920x1080 but tried toggling through the "system" and "system enhanced" just to see if anything changed.
I remember that Vimeo video from years ago being helpful

Will check it out again. And yeah, would love to see how you would update it!
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I appreciate the suggestions and observations

What's left of the problem isn't really getting in my way now but I'm thinking it may be a symptom of a bigger problem(?) Will post about any other glitchy tablet behavior that comes up