Minecraft 1.13.1, Minecraft 1.13.2, Minecraft 18w43c, Minecraft 18w45a, Minecraft 18w46a, Minecraft 19w06a, Minecraft 19w12b, Minecraft 19w13b, Minecraft 19w14a, Minecraft 19w14b, Minecraft 1.14
When a mushroom grows into a giant mushroom, the blocks the giant mushroom consists of don't send block updates to adjacent blocks. Observers trigger properly though.
This happens both with red and brown mushrooms.
- Build the test setup seen in this screenshot:
- Place a red or brown mushroom on top of the podzol
- Use bonemeal on the mushroom until it grows
- The Redstone lamp won't activate:
A code analysis by Schortan can be found in this comment.
Discovered by docm77 in this video