Paint on Front Bumper is Peeling Off

[shergenr]

Bought my Blue 2013 es350 last October.  Car had 38K miles on it.  Carfax indicated no wrecks/repairs.

I bottomed the front of the car (wind damn,ferring, cowl whatever we call it) going into a parking lot.  A couple days later a big flake of paint falls off.  Take it to the dealer as it was still under warranty, dealer said "hey not our prob, you must have flexed the part too much".  I'm thinking maybe, but have had cars with soft bumpers before and have bottomed them the same, never have I had one flake off.  Have bottomed car a couple more times, paint flaking off in those areas too.  

Anyone else experiencing this problem?  Reason I had included color of car is that I had seen  some issues mentioned about the navy blue paint.