Welcome. Yes, a little Regen in D mode is normal - it's meant to simulate the drag of a typical automatic transmission's torque converter. It would be very nice to be able to turn it off, but you can't. There was a device available for the Gen I Leaf that could give you a 'coast' mode, but Gen II drivers have to make do with 'feathering' the accelerator pedal...
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.