There isn’t really much else how I can describe it, but this image summarizes it perfectly: (see the media at the bottom of the page)
This Bug can’t really be reproduced, because it’s more or less dependent on the spawn location of the remains themselves.
Normally I would just find the remains scattered around the stairs or the rest of the beach.
The Issue caused was the fact that I could not reach nor claim the Doomed Remains. A potential fix is making it so that they cannot spawn under the stairs, by possibly making the spawn zone move around the stairs.
