Not your particular problem, but, yeah, there have been a LOT of annoying little problems with CC 2015. The sound sync error problem even though there isn’t any problem, the color change during the new morph cut, I just put up another post about Media Encoder not rendering the color grading the way it looks in Premiere Pro.
I’m just an amateur, so it’s not life and death for me, but I can imagine you guys who do this for a living. Personally I don’t think the Lumetri color panel was worth upgrading to all these headaches.