GSV50R

Hey people, new to the forum here! Just picked up a new 2015 Aurion Sportivo and will upload pics soon. I would I like to know from other GSV50R owners if this issue is normal? Basically when I reach around 60km/h and let go of the accelerator, the car engine brakes (or downshifts?) and the revs go up slightly and you can really feel the deceleration. It doesn't just happen downhill but also happens on a flat road. Anyone have any suggestions? Thanks in advance!