diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index 8500567cbe..41dca435c1 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -105,6 +105,7 @@ use pocketmine\network\protocol\SetSpawnPositionPacket;
 use pocketmine\network\protocol\SetTimePacket;
 use pocketmine\network\protocol\StartGamePacket;
 use pocketmine\network\protocol\TakeItemEntityPacket;
+use pocketmine\network\protocol\UpdateBlockPacket;
 use pocketmine\network\SourceInterface;
 use pocketmine\permission\PermissibleBase;
 use pocketmine\permission\PermissionAttachment;
@@ -1714,7 +1715,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 					$target = $this->level->getBlock($blockVector);
 					$block = $target->getSide($packet->face);
 
-					$this->level->sendBlocks([$this], [$target, $block]);
+					$this->level->sendBlocks([$this], [$target, $block], UpdateBlockPacket::FLAG_ALL_PRIORITY);
 					break;
 				}elseif($packet->face === 0xff){
 					if($this->isCreative()){
@@ -1891,7 +1892,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 				$target = $this->level->getBlock($vector);
 				$tile = $this->level->getTile($vector);
 
-				$this->level->sendBlocks([$this], [$target]);
+				$this->level->sendBlocks([$this], [$target], UpdateBlockPacket::FLAG_ALL_PRIORITY);
 
 				if($tile instanceof Spawnable){
 					$tile->spawnTo($this);
diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index f9f5583f7c..bba7d5e633 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -83,6 +83,7 @@ abstract class Entity extends Location implements Metadatable{
 	const DATA_SHOW_NAMETAG = 3;
 	const DATA_POTION_COLOR = 7;
 	const DATA_POTION_VISIBLE = 8;
+    const DATA_NO_AI = 15;
 
 
 	const DATA_FLAG_ONFIRE = 0;
@@ -1474,14 +1475,16 @@ abstract class Entity extends Location implements Metadatable{
 	 * @param mixed $value
 	 */
 	public function setDataProperty($id, $type, $value){
-		$this->dataProperties[$id] = [$type, $value];
+        if($this->getDataProperty($id) !== $value){
+            $this->dataProperties[$id] = [$type, $value];
 
-		$targets = $this->hasSpawned;
-		if($this instanceof Player){
-			$targets[] = $this;
-		}
+            $targets = $this->hasSpawned;
+            if($this instanceof Player){
+                $targets[] = $this;
+            }
 
-		$this->sendData($targets, [$id => $this->dataProperties[$id]]);
+            $this->sendData($targets, [$id => $this->dataProperties[$id]]);
+        }
 	}
 
 	/**
diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 2687f8ed2f..13ae68f962 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -161,7 +161,7 @@ class Level implements ChunkManager, Metadatable{
 	/** @var FullChunk[]|Chunk[] */
 	private $chunks = [];
 
-	/** @var Block[][] */
+	/** @var Vector3[][] */
 	protected $changedBlocks = [];
 
 	/** @var ReversePriorityQueue */
@@ -591,7 +591,7 @@ class Level implements ChunkManager, Metadatable{
 							$p->unloadChunk($X, $Z);
 						}
 					}else{
-						$this->sendBlocks($this->getUsingChunk($X, $Z), $blocks);
+						$this->sendBlocks($this->getUsingChunk($X, $Z), $blocks, UpdateBlockPacket::FLAG_ALL);
 					}
 				}
 			}
@@ -618,8 +618,12 @@ class Level implements ChunkManager, Metadatable{
 			if($b === null){
 				continue;
 			}
-
-			$pk->records[] = [$b->x, $b->z, $b->y, $b->getId(), $b->getDamage(), $flags];
+            if($b instanceof Block){
+                $pk->records[] = [$b->x, $b->z, $b->y, $b->getId(), $b->getDamage(), $flags];
+            }else{
+                $fullBlock = $this->getFullBlock($b->x, $b->y, $b->z);
+                $pk->records[] = [$b->x, $b->z, $b->y, $fullBlock >> 4, $fullBlock & 0xf, $flags];
+            }
 		}
 		Server::broadcastPacket($target, $pk);
 	}
diff --git a/src/pocketmine/level/particle/FloatingTextParticle.php b/src/pocketmine/level/particle/FloatingTextParticle.php
index 671b15c6de..98cfb7147e 100644
--- a/src/pocketmine/level/particle/FloatingTextParticle.php
+++ b/src/pocketmine/level/particle/FloatingTextParticle.php
@@ -91,8 +91,9 @@ class FloatingTextParticle extends Particle{
 			$pk->metadata = [
 				Entity::DATA_FLAGS => [Entity::DATA_TYPE_BYTE, 1 << Entity::DATA_FLAG_INVISIBLE],
 				Entity::DATA_AIR => [Entity::DATA_TYPE_SHORT, 300],
-				Entity::DATA_SHOW_NAMETAG => [Entity::DATA_TYPE_BYTE, 1]
-			];
+				Entity::DATA_SHOW_NAMETAG => [Entity::DATA_TYPE_BYTE, 1],
+				Entity::DATA_NO_AI => [Entity::DATA_TYPE_BYTE, 1]
+            ];
 
 			$p[] = $pk;
 		}
diff --git a/src/pocketmine/network/protocol/UpdateBlockPacket.php b/src/pocketmine/network/protocol/UpdateBlockPacket.php
index d42c8d1294..465bca1dbe 100644
--- a/src/pocketmine/network/protocol/UpdateBlockPacket.php
+++ b/src/pocketmine/network/protocol/UpdateBlockPacket.php
@@ -28,13 +28,14 @@ class UpdateBlockPacket extends DataPacket{
 	public static $pool = [];
 	public static $next = 0;
 
-	const FLAG_NONE = 0b0;
-	const FLAG_NEIGHBORS = 0b1;
-	const FLAG_NOGRAPHIC = 0b100;
-	const FLAG_PRIORITY = 0b1000;
+	const FLAG_NONE      = 0b0000;
+	const FLAG_NEIGHBORS = 0b0001;
+    const FLAG_NETWORK   = 0b0010;
+	const FLAG_NOGRAPHIC = 0b0100;
+	const FLAG_PRIORITY  = 0b1000;
 
-	const FLAG_ALL = self::FLAG_NEIGHBORS;
-	const FLAG_ALL_PRIORITY = self::FLAG_NEIGHBORS | self::FLAG_PRIORITY;
+	const FLAG_ALL = (self::FLAG_NEIGHBORS | self::FLAG_NETWORK);
+	const FLAG_ALL_PRIORITY = (self::FLAG_ALL | self::FLAG_PRIORITY);
 
 	public $records = []; //x, z, y, blockId, blockData, flags