The latest update to Flash Pro has a fix for this issue. Are you sure that you are on the latest version of Flash Pro? Look at your Creative Cloud desktop application to check for any updates or use Help > Update from within the application.
Let me check with the concerned teams.
Thank you very much.
Can you please let us know which wacom tablet you are using and check whether eraser of the pen (one of the end of the pen acts as eraser) is working for you ?
I've got the Intuos Pro Pen and Touch with driver version 6.3.13w3
The eraser works in CS6, but it's drawing instead of erasing in CC 2015.
We have logged a bug for this issue and are tracking it for a fix in a future update.