Remove tile entities when a block is removed.

src/main/java/net/minecraft/server/Chunk.java

@@ -311,9 +311,12 @@ public class Chunk {
             if (l1 != 0) {
                 if (!this.world.isStatic) {
                     Block.byId[l1].remove(this.world, i2, j, j2);
-                } else if (Block.byId[l1] instanceof BlockContainer && l1 != l) {
+                    // CraftBukkit start - delete tile entities for removed blocks
+                     if (Block.byId[l1] instanceof BlockContainer) {
                         this.world.n(i2, j, j2);
                      }
+                    // CraftBukkit end
+                }
             }
 
             if ((this.b[i << this.world.heightBitsPlusFour | k << this.world.heightBits | j] & 255) != l) return false; // CraftBukkit
@@ -384,6 +387,11 @@ public class Chunk {
             this.b[i << this.world.heightBitsPlusFour | k << this.world.heightBits | j] = (byte) (b0 & 255);
             if (k1 != 0) {
                 Block.byId[k1].remove(this.world, l1, j, i2);
+                // CraftBukkit start - delete tile entities for removed blocks
+                if (Block.byId[k1] instanceof BlockContainer) {
+                   this.world.n(l1, j, i2);
+                }
+                // CraftBukkit end
             }
 
             this.g.a(i, j, k, 0);