From d8824e7ee1639138654828dfc089f3b006faa2b9 Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Fri, 29 Jun 2018 11:06:33 +0100
Subject: [PATCH] Level: discard changed blocks on chunk replace this could
 cause issues when plugins replace chunks when blocks in the chunk have been
 changed on the same tick.

---
 src/pocketmine/level/Level.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 65cd4e0af..d1266d28b 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -2367,6 +2367,7 @@ class Level implements ChunkManager, Metadatable{
 
 		unset($this->blockCache[$chunkHash]);
 		unset($this->chunkCache[$chunkHash]);
+		unset($this->changedBlocks[$chunkHash]);
 		$chunk->setChanged();
 
 		if(!$this->isChunkInUse($chunkX, $chunkZ)){