Looking for solution this problem with my Adobe Flash and Wacom PenTablet problem? https://www.youtube.com/watch?v=cDytny1lpUQ&feature=youtu.be
Seems like there is half screen offset with painting...
Could you please provide more details on settings like
Tablet specific setting such as (windows ink etc)
Tablet Driver version
Tool related setting in Flash Pro
Version number of Flash Pro
And if it is not a problem for you could you please uninstall the driver for tablet and Flash(Use CC cleaner tool) and re-install the latest version of drivers from Legacy Drivers | Wacom and also Flash Pro from Creative cloud. reboot the system and check if the issue happens??
You can also refer to the following threads if they can help you in anyway: