Moss can convert polished andesite, diorite & granite into moss

Summary: Moss when bone mealed next to polished andersite, diorite or granite turns into moss blocks.

How To Reproduce:
1: Grab moss block and bone meal.
2: Place polished andersite, diorite or granite next to the moss block.
3: Now bone meal the moss block.

Observed Results:
The moss block converts the polished granite, diorite and granite into moss blocks.

Expected Results:
The moss block shouldn't convert polished andersite, diorite and granite into moss

NOTE:
I don't know if this is intentional.