The OBJ+MTL model for my Runestone block is a rectangular prism with a texture. It instead shows up as an enlarged, black version with no texture that sinks into the ground.
MCreator issue tracker has been migrated to GitHub.
Existing tickets have been migrated to GitHub. Please open new tickets on the GitHub tracker instead. If you do not have a GitHub account, all feature requests and bug reports from forums are still considered and checked by the maintainers.