By uncovering surface area and wait until shove mole lay an egg while they are buried in to a solid block will cause an error. see attached save file >> Abyss Cycle 225.sav
cause : probably from shove trying to lay egg on solid tile.
Steps to Reproduce
Just uncover the surface biome and wait until shove mole lay egg while buried.
This issue has been fixed in either a future version or updated in a previous version.