From Page 27 of the new release guide with Artist Control
The Control app can be used simultaneously with an Artist Control, and they will share Soft Key assignments. However, you should only use the Soft Keys from one or the other media controller. Do not use Soft Keys from the Control app, then from Artist Control, and so on; choose one of the two controllers as your Soft Key controller.
http://resources.avid.com/SupportFil...ide_v19.12.pdf
I don't know if that's what you're seeing, but it might be related.