I don't have a GXP and haven't noticed this issue on my standard issue GT, but I'd definitely tell the dealer to fix it as I'd classify that as a factory defect. They might have already issues a TSB about the problem, I'd check in at the dealer.
If the dealer won't do anything, inform the NHTSA that loose pieces on your relatively NEW car might fall off while driving at highway speeds, and they'll definitely look into it.
'11 Ram SXT 4x4 quad cab - 5.7L V8; 128,200kms
'09 Malibu 2Lt 3.6L - 140,000kms purchased 1 March 2019
'06 Pontiac G6 GT - 3.5L V6; 162,000kms (rear ended 15 Feb 2019, and given totalled title by insurance)