Are you getting a stall, or are you at enough of a stop that the auto stop/start is engaging. I have had that happen.
Disengage the auto stop/start and see if the behavior continues. If it does, a trip to the dealer is warranted.
No stalling, but the Auto Stop/Start sometimes feels like a stall. Many times when I come to a stop while pulling into the driveway, just when I am ready to put the vehicle in Park, it shuts off. Stupid Car!
First few time I encountered this, I thought it had stalled. Put the vehicle in park, and it re-starts.