Kia Seltos 2023 arizona bumper wavy pattern

2023 Kia Seltos in Arizona. The rear bumper trim has turned gray/white with these strange wavy patterns. The vehicle spends a lot of time in the sun, but this doesn't look like normal fading to me. Has anyone seen this before? Is it UV damage, chemical staining, or a defective trim piece? Any recommendations for restoring it or pursuing warranty coverage?

https://preview.redd.it/rb23sxpbbe5h1.jpg?width=2048&format=pjpg&auto=webp&s=bb5707b57dd4c817cda1b1e210078bbfbf240842

https://preview.redd.it/qnn4dypbbe5h1.jpg?width=2048&format=pjpg&auto=webp&s=42a33b7e06ebef4a913a1bdd3336aa5c49b74949

https://preview.redd.it/c2uiqzpbbe5h1.jpg?width=1024&format=pjpg&auto=webp&s=2f5ed60201c9bc9e21f0163adca537917bd35036

https://preview.redd.it/my56fbqbbe5h1.jpg?width=2048&format=pjpg&auto=webp&s=516d5bd5b661fc7f3953e4abfcda4232648fd527

https://preview.redd.it/zggrazpbbe5h1.jpg?width=2048&format=pjpg&auto=webp&s=a65dea3208321ed8bc90731bb21bf0744ca85dd7