When placing mushrooms in the nether, and then using bone meal on them, they will never grow, no matter how much bone meal you use on them. Even though it shows the green growing particles, neither red or brown mushrooms will grow into huge mushrooms.

Steps to Reproduce:

• Enter a dark environment.
• Place down a mushroom and place a block above it.
• Obtain some bone meal and apply lots of it to the mushroom.

Observed Behavior:
Bone meal is consumed when used on mushrooms in situations where they can't grow.

Expected Behavior:
Bone meal would not be consumed when used on mushrooms in situations where they can't grow.

Code Analysis:
Code analysis by Avoma can be found in this comment.