I'm not sure what's going on with my 2011 WK2's door locks, and it's very intermittent. I come to a stop, turn off the motor, hop out of the driver side door, and depress the lock button on the armrest. My key fob is in my pocket. I walk one or two steps away from the vehicle, and the parking lights flash, and the doors unlock!
Of course, the dealership has never heard or seen this. If I locked it with the remote key fob or with the outside door handle pushbutton, it does reopen. It's almost as though it recognizes a key fob is still in the vehicle???
I've carried it in my cargo shorts side pocket with the same occasional result. I know what you mean about carrying it in your jeans with other things in the pocket. I've actually remote started the Jeep by accident!
You may need a new fob, search around there are other threads about that. Mine used to do the same and even roll the windows down too. Fixed with a new fob, and hopefully yours is still under warranty.
2011 Laredo X 4x4, ORA 1, Quad Trac II 4WD, Wild Country XTX Sport 265/70/17, American Racing ATX series AX188 Ledge, RRO 2.5 lift, PIAA 510 & 520 ATP Aux lights, Yakima roof rack, Mopar rock rails, dealer OEM hitch, RR winch mount and brush bar, Smitty 10K winch, RR pre-runner skid plate, slightly de-chromed.