diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index ebb7663e3..554b929fa 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -1397,7 +1397,7 @@ class Server{
 				Network::$BATCH_THRESHOLD = -1;
 			}
 
-			$this->networkCompressionLevel = $this->getProperty("network.compression-level", 7);
+			$this->networkCompressionLevel = (int) $this->getProperty("network.compression-level", 7);
 			if($this->networkCompressionLevel < 1 or $this->networkCompressionLevel > 9){
 				$this->logger->warning("Invalid network compression level $this->networkCompressionLevel set, setting to default 7");
 				$this->networkCompressionLevel = 7;
diff --git a/src/pocketmine/block/CocoaBlock.php b/src/pocketmine/block/CocoaBlock.php
index fca535a99..e345bb45b 100644
--- a/src/pocketmine/block/CocoaBlock.php
+++ b/src/pocketmine/block/CocoaBlock.php
@@ -23,6 +23,11 @@ declare(strict_types=1);
 
 namespace pocketmine\block;
 
+use pocketmine\item\Item;
+use pocketmine\item\ItemFactory;
+use pocketmine\item\ItemIds;
+use function mt_rand;
+
 class CocoaBlock extends Transparent{
 
 	protected $id = self::COCOA_BLOCK;
@@ -48,4 +53,14 @@ class CocoaBlock extends Transparent{
 	public function isAffectedBySilkTouch() : bool{
 		return false;
 	}
+
+	public function getDropsForCompatibleTool(Item $item) : array{
+		return [
+			ItemFactory::get(ItemIds::DYE, 3, ($this->meta >> 2) === 2 ? mt_rand(2, 3) : 1)
+		];
+	}
+
+	public function getPickedItem() : Item{
+		return ItemFactory::get(ItemIds::DYE, 3);
+	}
 }
diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index 8beceae0e..c858b663b 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -1931,7 +1931,12 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 	}
 
 	public function spawnTo(Player $player) : void{
-		if(!isset($this->hasSpawned[$player->getLoaderId()]) and $this->chunk !== null and isset($player->usedChunks[Level::chunkHash($this->chunk->getX(), $this->chunk->getZ())])){
+		if(
+			!isset($this->hasSpawned[$player->getLoaderId()]) and
+			$this->chunk !== null and
+			isset($player->usedChunks[$chunkHash = Level::chunkHash($this->chunk->getX(), $this->chunk->getZ())]) and
+			$player->usedChunks[$chunkHash] === true
+		){
 			$this->hasSpawned[$player->getLoaderId()] = $player;
 
 			$this->sendSpawnPacket($player);
diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 57ef67567..d732c531b 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -1909,7 +1909,7 @@ class Level implements ChunkManager, Metadatable{
 
 		if($player !== null){
 			$ev = new BlockPlaceEvent($player, $hand, $blockReplace, $blockClicked, $item);
-			if($this->checkSpawnProtection($player, $blockClicked)){
+			if($this->checkSpawnProtection($player, $blockReplace)){
 				$ev->setCancelled();
 			}
 
diff --git a/src/pocketmine/level/light/LightUpdate.php b/src/pocketmine/level/light/LightUpdate.php
index 80bf4689a..e4fa7cf03 100644
--- a/src/pocketmine/level/light/LightUpdate.php
+++ b/src/pocketmine/level/light/LightUpdate.php
@@ -34,17 +34,26 @@ abstract class LightUpdate{
 	/** @var ChunkManager */
 	protected $level;
 
-	/** @var int[][] blockhash => [x, y, z, new light level] */
+	/**
+	 * @var int[][] blockhash => [x, y, z, new light level]
+	 * @phpstan-var array<int, array{int, int, int, int}>
+	 */
 	protected $updateNodes = [];
 
 	/** @var \SplQueue */
 	protected $spreadQueue;
-	/** @var bool[] */
+	/**
+	 * @var true[]
+	 * @phpstan-var array<int, true>
+	 */
 	protected $spreadVisited = [];
 
 	/** @var \SplQueue */
 	protected $removalQueue;
-	/** @var bool[] */
+	/**
+	 * @var true[]
+	 * @phpstan-var array<int, true>
+	 */
 	protected $removalVisited = [];
 	/** @var SubChunkIteratorManager */
 	protected $subChunkHandler;
diff --git a/src/pocketmine/network/mcpe/protocol/AddPlayerPacket.php b/src/pocketmine/network/mcpe/protocol/AddPlayerPacket.php
index fa4fbf64f..2e249a265 100644
--- a/src/pocketmine/network/mcpe/protocol/AddPlayerPacket.php
+++ b/src/pocketmine/network/mcpe/protocol/AddPlayerPacket.php
@@ -28,6 +28,7 @@ namespace pocketmine\network\mcpe\protocol;
 use pocketmine\item\Item;
 use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\NetworkSession;
+use pocketmine\network\mcpe\protocol\types\DeviceOS;
 use pocketmine\network\mcpe\protocol\types\EntityLink;
 use pocketmine\utils\UUID;
 use function count;
@@ -84,7 +85,7 @@ class AddPlayerPacket extends DataPacket{
 	/** @var string */
 	public $deviceId = ""; //TODO: fill player's device ID (???)
 	/** @var int */
-	public $buildPlatform = -1;
+	public $buildPlatform = DeviceOS::UNKNOWN;
 
 	protected function decodePayload(){
 		$this->uuid = $this->getUUID();
diff --git a/src/pocketmine/network/mcpe/protocol/types/DeviceOS.php b/src/pocketmine/network/mcpe/protocol/types/DeviceOS.php
new file mode 100644
index 000000000..97a6fe5eb
--- /dev/null
+++ b/src/pocketmine/network/mcpe/protocol/types/DeviceOS.php
@@ -0,0 +1,44 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+declare(strict_types=1);
+
+namespace pocketmine\network\mcpe\protocol\types;
+
+final class DeviceOS{
+
+	public const UNKNOWN = -1;
+	public const ANDROID = 1;
+	public const IOS = 2;
+	public const OSX = 3;
+	public const AMAZON = 4;
+	public const GEAR_VR = 5;
+	public const HOLOLENS = 6;
+	public const WINDOWS_10 = 7;
+	public const WIN32 = 8;
+	public const DEDICATED = 9;
+	public const TVOS = 10;
+	public const PLAYSTATION = 11;
+	public const NINTENDO = 12;
+	public const XBOX = 13;
+	public const WINDOWS_PHONE = 14;
+
+}
diff --git a/src/pocketmine/network/mcpe/protocol/types/PlayerListEntry.php b/src/pocketmine/network/mcpe/protocol/types/PlayerListEntry.php
index 1393bf48b..56a021769 100644
--- a/src/pocketmine/network/mcpe/protocol/types/PlayerListEntry.php
+++ b/src/pocketmine/network/mcpe/protocol/types/PlayerListEntry.php
@@ -40,7 +40,7 @@ class PlayerListEntry{
 	/** @var string */
 	public $platformChatId = "";
 	/** @var int */
-	public $buildPlatform = -1;
+	public $buildPlatform = DeviceOS::UNKNOWN;
 	/** @var bool */
 	public $isTeacher = false;
 	/** @var bool */
diff --git a/src/pocketmine/network/mcpe/protocol/types/SkinImage.php b/src/pocketmine/network/mcpe/protocol/types/SkinImage.php
index bee563295..14cd29ce0 100644
--- a/src/pocketmine/network/mcpe/protocol/types/SkinImage.php
+++ b/src/pocketmine/network/mcpe/protocol/types/SkinImage.php
@@ -49,11 +49,11 @@ class SkinImage{
 	public static function fromLegacy(string $data) : SkinImage{
 		switch(strlen($data)){
 			case 64 * 32 * 4:
-				return new self(64, 32, $data);
+				return new self(32, 64, $data);
 			case 64 * 64 * 4:
 				return new self(64, 64, $data);
 			case 128 * 64 * 4:
-				return new self(128, 64, $data);
+				return new self(64, 128, $data);
 			case 128 * 128 * 4:
 				return new self(128, 128, $data);
 		}
diff --git a/src/pocketmine/permission/PermissionManager.php b/src/pocketmine/permission/PermissionManager.php
index 4fe5dd65b..f44196fd9 100644
--- a/src/pocketmine/permission/PermissionManager.php
+++ b/src/pocketmine/permission/PermissionManager.php
@@ -116,7 +116,7 @@ class PermissionManager{
 			$this->defaultPerms[$permission->getName()] = $permission;
 			$this->dirtyPermissibles(false);
 		}
-		Timings::$permissionDefaultTimer->startTiming();
+		Timings::$permissionDefaultTimer->stopTiming();
 	}
 
 	private function dirtyPermissibles(bool $op) : void{
diff --git a/src/pocketmine/resourcepacks/ZippedResourcePack.php b/src/pocketmine/resourcepacks/ZippedResourcePack.php
index 3a4ba556a..89b9a97a7 100644
--- a/src/pocketmine/resourcepacks/ZippedResourcePack.php
+++ b/src/pocketmine/resourcepacks/ZippedResourcePack.php
@@ -24,6 +24,7 @@ declare(strict_types=1);
 namespace pocketmine\resourcepacks;
 
 use Ahc\Json\Comment as CommentedJsonDecoder;
+use function assert;
 use function count;
 use function fclose;
 use function feof;
@@ -35,6 +36,8 @@ use function fseek;
 use function gettype;
 use function hash_file;
 use function implode;
+use function preg_match;
+use function strlen;
 
 class ZippedResourcePack implements ResourcePack{
 
@@ -85,7 +88,22 @@ class ZippedResourcePack implements ResourcePack{
 		}
 
 		if(($manifestData = $archive->getFromName("manifest.json")) === false){
-			if($archive->locateName("pack_manifest.json") !== false){
+			$manifestPath = null;
+			$manifestIdx = null;
+			for($i = 0; $i < $archive->numFiles; ++$i){
+				$name = $archive->getNameIndex($i);
+				if(
+					($manifestPath === null or strlen($name) < strlen($manifestPath)) and
+					preg_match('#.*/manifest.json$#', $name) === 1
+				){
+					$manifestPath = $name;
+					$manifestIdx = $i;
+				}
+			}
+			if($manifestIdx !== null){
+				$manifestData = $archive->getFromIndex($manifestIdx);
+				assert($manifestData !== false);
+			}elseif($archive->locateName("pack_manifest.json") !== false){
 				throw new ResourcePackException("Unsupported old pack format");
 			}else{
 				throw new ResourcePackException("manifest.json not found in the archive root");
diff --git a/src/pocketmine/scheduler/TaskScheduler.php b/src/pocketmine/scheduler/TaskScheduler.php
index 60e4b1b60..31621a89c 100644
--- a/src/pocketmine/scheduler/TaskScheduler.php
+++ b/src/pocketmine/scheduler/TaskScheduler.php
@@ -36,7 +36,7 @@ class TaskScheduler{
 	/** @var bool */
 	private $enabled = true;
 
-	/** @var ReversePriorityQueue<Task> */
+	/** @var ReversePriorityQueue<TaskHandler> */
 	protected $queue;
 
 	/** @var TaskHandler[] */