I have the same problem for years now.
I’m using OS-X Yosemite, Wacom Cintiq 27QHD, and the latest version of Adobe Premiere Pro (CC 2015).
But I noticed this problem when I started using Premiere Pro Cs5 in combination with an older Wacom Cintiq.
Latest reaction from Wacom in an email conversation:
“I understand the frustration of the customer, but I am afraid, that we have limited influence on software made by other companies. Wacom frequently reports bugs to software suppliers such as Apple and Adobe. We work with them and supply all information we can provide. Then we have to wait til it gets fixed. It can help in the process, if customers report the problems directly to the makers of the software.”