Wow, that's not good.. I'll have to keep an eye out for that. You'd think that for the price, they would put enough paint on it, and enough clear over it to protect it.
I could be wrong but I don't think it is painted. I believe it is a fiber reinforced plastic. It is plenty strong but didn't stay as black as I wanted it to. For my 2019 Ram I got the UnderCover UltraFlex. They both good covers but have their pro's and con's.
F1
Pros: 1. It offered good protection against water getting into the bed. Still leaked but was pretty good. 2. The top of the cover is a fiber reinforced plastic so it resists denting.
Cons: 1. It didn't stay black. As stated earlier the fibers started to show. This results in lighter color spots. I am picky so it bothers me. 2. the cover rests against the cab when opened all the way. There are foam pads to protect the cab but as the frame flexes the cover moves side to side against the cab. 3. There is a bracket on each rail the prop rods attach to. These are riveted on and if, as in my case, you do not place something between the rivets and the plastic bed cap you will see a mark in the bed cap when the rail is removed.
UltraFlex (There may be more items to add to the list below but the cover is too new for me to have found everything.)
Pro's: 1. The cover finish is a more matte black finish. 2. The cover uses the prop rods to hold it up in the full open position so it doesn't rest against the cab. 3. It came with a rail mounted bag and battery powered under the bed rail mounted lights. I haven't used these yet but it's nice to have them if I want to use them.
Con's 1. It leaks more water into the bed. 2. The top part of the cover is aluminum so it can dent. It is supposed to be the thickest on the market and therefore resisting dents better than others. I'll take their word on this, I don't want to test it.
I hope this information is useful.