From 3fdb1dae891799dd98d2a288e12a3efc279ae9d6 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 3 Apr 2016 17:48:50 -0400
Subject: [PATCH] Fix Cancelling BlockPlaceEvent triggering physics


diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 841a6c7..46b1323 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -532,6 +532,7 @@ public abstract class World implements IBlockAccess {
     }
 
     public void applyPhysics(BlockPosition blockposition, Block block, boolean flag) {
+        if (captureBlockStates) { return; } // Paper - Cancel all physics during placement
         this.a(blockposition.west(), block, blockposition);
         this.a(blockposition.east(), block, blockposition);
         this.a(blockposition.down(), block, blockposition);
-- 
2.9.3