Put the summary of the bug you're having here
What I expected to happen was the mushroom wouldn't take my bone meal
*What actually happened was when I accidently right clicked on the mushroom I lost my bone meal.
Steps to Reproduce:
1.Place a mushroom
2.place a block 2 blocks above it (this is so the mushroom has no space to grow)
3.bone meal the mushroom but instead of the player keeping it the player will loose it.
The plant tries to grow but can't. This mechanic is useful for trees (because they do not always occupy the same space), and I think huge mushrooms have to have the same one.