i have a weather tech mat thing in the cargo area, its slip resistant, and we put the groceries in the insulated bags. I find that even with all that///i best be near the liftgate when i open it as inevitably a bag will try to leap to its death, usually the one with pickles.
I think in my case it has something to do with driving techniques.
the glass, i am always worried it will break when i close it. A few times i thought it was closed and noticed the lights stayed on, i found the rear glass unlatched. mine takes a good medium close to latch. is this normal