Re: nspiron 7577 design fault?
You can file a complaint with the BBB and see if they will help you. I had an issue on a new refrigerator some time ago and wrote the BBB, and the factory regional service rep took care if it. A different case than yours.
Worth a try in your case, and see what happens? Looks like DELL cosmetic sloppy work?
Inspiron 7572 15\8th Gen\i5\8GB Ram\256GB SS\Nvidia MX150 4GB\InfinityEdge Display 
Inspiron 3542 15\4th Gen\ i3\4GB Ram\500GB\DVD 
Three 11.6" Laptops
Win 10 Ver. 1903 on all.