Brushes lock up into "Stamp Mode"

Hi all,

I'm hoping someone here has some insight on an especially frustrating bug Ive been experiencing with Painter 2019.  Any help would be very much appreciated.

Essentially the issue is that any and all of my brushes seem to lock up at random and resort to only placing a single stamp dab down of the brush without continuing the whole stroke. 

In addition, once the brush locks up this way I can only change its size through the bracket keys and not the CTRL + OPTION modifiers I normally use.  It seems to happen at random and with much frequency of late (Maybe 5-10 times per hour).  It also seems to "correct" itself at random too.  Only after trying to click other interface elements, switching tools, or switching apps it will finally go back to the normal behavior.  None of which are consistent though.  Often times the brush will stay this way anywhere from a few seconds to 20 seconds or more even.  

I've attempted to completely delete/reinstall my Wacom driver and still no luck.  This issue only seems too be with Painter as I don't experience the issue with PS.  In addition to the screen grab below you can check out a video of the issue here.

Anyone with insight or experience issues such as this before?  Thoughts?  Much thanks in advance.

Best,

Dom

Machine Specs:

iMac (Retina 5K, 27-inch, 2017)

4.2 GHz Intel Core i7

64 GB 2400 MHz DDR4

Radeon Pro 580 8192 MB

Cintiq 27QHD Touch