See the attached screenshot for a setup.
Using bonemeal on a single grass plant (to grow it into a double plant) will delete the block above, regardless of what it is.
Expected behavior would be for the grass to fail to grow if it is blocked.
MC-123351
Growing grass with bonemeal deletes upper block
Resolved
Fixed
12
Confirmed
bonemeal, breaks, destroys, double-plant, fern, grass, plant, removes, replaces
Minecraft 17w50a, Minecraft 18w01a, Minecraft 18w02a, Minecraft 18w03b, Minecraft 18w05a, Minecraft 18w06a, Minecraft 18w07c, Minecraft 18w08b, Minecraft 18w16a, Minecraft 18w19a
Minecraft 18w19b
Retrieved
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