Yes it should drop a gear moving the shifter into S when off the accelerator, so slowing down, or just rolling along in D and going back to S. Perfect for winter driving as no touching the brakes.
It is how i drive any DSG, 6 or 7 speed wet clutch or 7 speed dry.
It is how i boot the car sometimes, instead of a double kickdown, back to S then down a gear then kick down. Only if someone is up my jacksy.
Maybe just ignore her about Autohold.
As too manual 1st and changing up. Forcing the box to.
DQ200's did this. & i used that for Sprinting, Hill Climbing, 1/4 Mile.
Car held on hand brake not brake pedal, into manual and floor it and force shifts til 4th, then a knock across to D or do manual upshifts.
This was faster than me changing, or being in S.
Maybe no longer applicable, but it has been with wet and dry clutch over the years to save the DSG. Some do lock though and scream.