300C transmission shifting with cruise control
 

I have a 2014 300C with 8 speed transmission and V6 engine. It doesn't seem to shift properly when using cruise control. For example, I can drive 50 to 55 MPH without cruise and the transmission shifts up fine, with the engine running at low revs. When I engage the cruise control, the carhttp://images.intellitxt.com/ast/adTypes/icon1.png downshifts and the revs jump a couple of hundred RPM. It will never upshift completely with the cruise on. Is this normal for these carshttp://images.intellitxt.com/ast/adTypes/icon1.png? Dealer was no help on this. Has anyone else seen this happen?