diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 993b80367..b33ae2404 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -6,3 +6,8 @@ updates:
     interval: daily
     time: "10:00"
   open-pull-requests-limit: 10
+
+- package-ecosystem: gitsubmodule
+  directory: "/"
+  schedule:
+    interval: daily
diff --git a/build/php b/build/php
index bd329dba0..30eed13fa 160000
--- a/build/php
+++ b/build/php
@@ -1 +1 @@
-Subproject commit bd329dba08242b6ecb99ef7fbf9a0031dcbbb3ff
+Subproject commit 30eed13faaa8995814b1ada426b7e947f891ee3c
diff --git a/changelogs/4.0.md b/changelogs/4.0.md
index ec6f7fa60..b7b66c4a4 100644
--- a/changelogs/4.0.md
+++ b/changelogs/4.0.md
@@ -1627,3 +1627,21 @@ Released 25th January 2022.
 ## Fixes
 - Fixed ender chest not dropping itself when mined with a Silk Touch pickaxe.
 - The correct amount of fall damage is now taken when falling from a height onto hay bales.
+
+# 4.0.9
+Released 5th February 2022.
+
+## Fixes
+### Core
+- The spawn chunk of the default world is no longer loaded during shutdown. Previously, it would attempt to find a safe spawn to teleport players to, only to unload the target world of that safe spawn and not use it.
+- The spawn chunk of the default world is no longer loaded when unloading a non-default world containing zero players.
+- Fixed chunk version `8` in Bedrock worlds being treated as corrupted. These appeared in worlds between 1.2.13 and 1.8.0.
+
+### API
+- Added missing bounds check to `Liquid->setDecay()`.
+- Fixed `StringToItemParser` returning concrete instead of concrete powder when given `<color>_concrete_powder`.
+
+### Gameplay
+- Cobwebs now drop themselves when broken using shears.
+- Fixed spectator players being able to drop items.
+- Fixed collision shapes of Bell in different orientations.
diff --git a/src/item/StringToItemParser.php b/src/item/StringToItemParser.php
index 843beae49..5c00b7650 100644
--- a/src/item/StringToItemParser.php
+++ b/src/item/StringToItemParser.php
@@ -49,7 +49,7 @@ final class StringToItemParser extends StringToTParser{
 			$result->registerBlock($prefix("bed"), fn() => VanillaBlocks::BED()->setColor($color));
 			$result->registerBlock($prefix("carpet"), fn() => VanillaBlocks::CARPET()->setColor($color));
 			$result->registerBlock($prefix("concrete"), fn() => VanillaBlocks::CONCRETE()->setColor($color));
-			$result->registerBlock($prefix("concrete_powder"), fn() => VanillaBlocks::CONCRETE()->setColor($color));
+			$result->registerBlock($prefix("concrete_powder"), fn() => VanillaBlocks::CONCRETE_POWDER()->setColor($color));
 			$result->registerBlock($prefix("stained_clay"), fn() => VanillaBlocks::STAINED_CLAY()->setColor($color));
 			$result->registerBlock($prefix("stained_glass"), fn() => VanillaBlocks::STAINED_GLASS()->setColor($color));
 			$result->registerBlock($prefix("stained_glass_pane"), fn() => VanillaBlocks::STAINED_GLASS_PANE()->setColor($color));
diff --git a/src/network/mcpe/encryption/EncryptionContext.php b/src/network/mcpe/encryption/EncryptionContext.php
index 18d469468..f8515c9c6 100644
--- a/src/network/mcpe/encryption/EncryptionContext.php
+++ b/src/network/mcpe/encryption/EncryptionContext.php
@@ -61,7 +61,7 @@ class EncryptionContext{
 	}
 
 	/**
-	 * Returns an EncryptionContext suitable for decrypting Minecraft packets from 1.16.200 and up.
+	 * Returns an EncryptionContext suitable for decrypting Minecraft packets from 1.16.220.50 (protocol version 429) and up.
 	 *
 	 * MCPE uses GCM, but without the auth tag, which defeats the whole purpose of using GCM.
 	 * GCM is just a wrapper around CTR which adds the auth tag, so CTR can replace GCM for this case.
diff --git a/src/resourcepacks/ZippedResourcePack.php b/src/resourcepacks/ZippedResourcePack.php
index 347a197dd..d67a205fc 100644
--- a/src/resourcepacks/ZippedResourcePack.php
+++ b/src/resourcepacks/ZippedResourcePack.php
@@ -106,7 +106,6 @@ class ZippedResourcePack implements ResourcePack{
 		}
 
 		$mapper = new \JsonMapper();
-		$mapper->bExceptionOnUndefinedProperty = true;
 		$mapper->bExceptionOnMissingData = true;
 
 		try{
diff --git a/src/world/WorldManager.php b/src/world/WorldManager.php
index 65fe54726..fda2bdcb6 100644
--- a/src/world/WorldManager.php
+++ b/src/world/WorldManager.php
@@ -153,16 +153,18 @@ class WorldManager{
 		}
 
 		$this->server->getLogger()->info($this->server->getLanguage()->translate(KnownTranslationFactory::pocketmine_level_unloading($world->getDisplayName())));
-		try{
-			$safeSpawn = $this->defaultWorld !== null ? $this->defaultWorld->getSafeSpawn() : null;
-		}catch(WorldException $e){
-			$safeSpawn = null;
-		}
-		foreach($world->getPlayers() as $player){
-			if($world === $this->defaultWorld || $safeSpawn === null){
-				$player->disconnect("Forced default world unload");
-			}else{
-				$player->teleport($safeSpawn);
+		if(count($world->getPlayers()) !== 0){
+			try{
+				$safeSpawn = $this->defaultWorld !== null && $this->defaultWorld !== $world ? $this->defaultWorld->getSafeSpawn() : null;
+			}catch(WorldException $e){
+				$safeSpawn = null;
+			}
+			foreach($world->getPlayers() as $player){
+				if($safeSpawn === null){
+					$player->disconnect("Forced default world unload");
+				}else{
+					$player->teleport($safeSpawn);
+				}
 			}
 		}
 
diff --git a/src/world/format/io/leveldb/LevelDB.php b/src/world/format/io/leveldb/LevelDB.php
index 91d367fb0..842708ed7 100644
--- a/src/world/format/io/leveldb/LevelDB.php
+++ b/src/world/format/io/leveldb/LevelDB.php
@@ -263,6 +263,7 @@ class LevelDB extends BaseWorldProvider implements WritableWorldProvider{
 			case 11: //MCPE 1.11.0.1 beta (???)
 			case 10: //MCPE 1.9 (???)
 			case 9: //MCPE 1.8 (???)
+			case 8: //MCPE 1.2.13 (paletted subchunks)
 			case 7: //MCPE 1.2 (???)
 			case 6: //MCPE 1.2.0.2 beta (???)
 			case 4: //MCPE 1.1
diff --git a/tests/plugins/DevTools b/tests/plugins/DevTools
index 39510af5b..e884a4c23 160000
--- a/tests/plugins/DevTools
+++ b/tests/plugins/DevTools
@@ -1 +1 @@
-Subproject commit 39510af5bcf19eef3b3157c8c51d88a736811591
+Subproject commit e884a4c234629126203e769df7c4dbbbc0dc2d49