Minor graphical artifact: Terraforming a sloped graveyard can make gravestones levitate

Picture:

Not sure if it persists across saves; I suspect this should be easy to reproduce. At a guess, it’s probably related to changing the height of the center of the graveyard.

Quick edit: Doing this terraform (shown for example, but already done) now instead sank the graves into the ground, probably because it was moving the center of the graveyard again.