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Type: Bug
Resolution: Fixed
Fix Version/s: Minecraft 17w49a
Affects Version/s: Minecraft 1.9.1 Pre-Release 1, Minecraft 1.9.1 Pre-Release 2, Minecraft 1.9.1 Pre-Release 3, Minecraft 1.9.1, Minecraft 1.9.2, Minecraft 16w14a, Minecraft 16w15a, Minecraft 16w15b, Minecraft 1.9.3 Pre-Release 1, Minecraft 1.9.3 Pre-Release 2, Minecraft 1.9.3 Pre-Release 3, Minecraft 1.9.3, Minecraft 1.9.4, Minecraft 16w20a, Minecraft 16w21a, Minecraft 16w21b, Minecraft 1.10 Pre-Release 1, Minecraft 1.10 Pre-Release 2, Minecraft 1.10, Minecraft 1.10.2, Minecraft 16w32a, Minecraft 16w39a, Minecraft 16w42a, Minecraft 16w43a, Minecraft 16w44a, Minecraft 1.11 Pre-Release 1, Minecraft 1.11, Minecraft 1.11.2, Minecraft 17w14a, Minecraft 1.12, Minecraft 1.12.1 Pre-Release 1, Minecraft 1.12.1, Minecraft 1.12.2 Pre-Release 1, Minecraft 1.12.2 Pre-Release 2, Minecraft 1.12.2, Minecraft 17w43a, Minecraft 17w43b, Minecraft 17w45a, Minecraft 17w45b, Minecraft 17w46a, Minecraft 17w47b
Labels:
- chest
- double-chest
- hopper
- item
- pull

Confirmation Status:
Confirmed

The bug

Hoppers can now pull items from blocked chests. However, this is not working correctly for double chests. If the second chest (first chest being the one where the hopper is below) is blocked the hopper is unable to pull items from the double chest.

Code analysis

Based on 1.11.2 decompiled using MCP 9.35 rc1

The method net.minecraft.block.BlockChest.getContainer(World, BlockPos, boolean) ignores the allowBlocking paramter (= third parameter; should be called "allowBlockedChests" or similar) when checking if adjacent chests are blocked.