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-rw-r--r--src/main/java/net/minecraft/server/Chunk.java6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 31cdcd55..192cd6f1 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -417,7 +417,11 @@ public class Chunk {
if (l != 0) {
if (!this.world.isStatic) {
- Block.byId[l].onPlace(this.world, j2, j, k2);
+ // CraftBukkit start - Don't extend piston until data is set
+ if (!(Block.byId[l] instanceof BlockPiston) || i2 != 0) {
+ Block.byId[l].onPlace(this.world, j2, j, k2);
+ }
+ // CraftBukkit end
}
if (Block.byId[l] instanceof BlockContainer) {