Not sure if fixable, but entities will sometimes cast a shadow on another entity on the same render layer.
Exhibit A, underground belt casts a shadow on splitters in 2/4 cases:
Exhibit B with loader casting a shadow on a splitter in 2/4 cases:
Careful examination shows splitter renders above loader, in this case.
Exhibit C with loader casting a shadow on underground belts in all cases:
I would think intended behavior is that objects on the same render layer will render above encroachment from the left? Idk. The underground belt behaves correctly with the loader entity when placed on the left:
[0.18.3] - Objects on same render layer casting shadows on entities to their right, sometimes
Re: [0.18.3] - Objects on same render layer casting shadows on entities to their right, sometimes
Thanks for the report.
Minor issue.
Minor issue.