diff --git a/build/php b/build/php
index 27cc1fcdf..6b605ed7c 160000
--- a/build/php
+++ b/build/php
@@ -1 +1 @@
-Subproject commit 27cc1fcdfa54b11c83d5d9056d189d080e5a7786
+Subproject commit 6b605ed7c458fc8f95080ffe41a7f248a7160107
diff --git a/changelogs/4.12.md b/changelogs/4.12.md
index efd53e528..eaf4c8d25 100644
--- a/changelogs/4.12.md
+++ b/changelogs/4.12.md
@@ -18,3 +18,15 @@ Released 4th December 2022.
 
 ## Fixes
 - Fixed items glitching when dragging a stack of items across the crafting grid (desync issues).
+
+# 4.12.2
+Released 15th December 2022.
+
+## Fixes
+- Folder used for plugins (optionally specified by `--plugins`) is no longer required to be writable.
+- Fixed broken writable check for server data folder (`is_writable()` broken on NFS and similar filesystems).
+- `Filesystem::createLockFile()` exceptions now include more information about why the lock file could not be created.
+- Fixed client-side item predictions not being rolled back when cancelling events such as `PlayerItemUseEvent`.
+
+## Dependencies
+- Updated BedrockProtocol to [17.1.0](https://github.com/pmmp/BedrockProtocol/releases/tag/17.1.0+bedrock-1.19.50). This adds some missing `LevelSoundEvent` constants and fixes the values for `ContainerUIIds`.
diff --git a/composer.json b/composer.json
index 444568035..ad19b71aa 100644
--- a/composer.json
+++ b/composer.json
@@ -55,7 +55,7 @@
       "symfony/filesystem": "^5.4"
    },
    "require-dev": {
-      "phpstan/phpstan": "1.9.2",
+      "phpstan/phpstan": "1.9.4",
       "phpstan/phpstan-phpunit": "^1.1.0",
       "phpstan/phpstan-strict-rules": "^1.2.0",
       "phpunit/phpunit": "^9.2"
diff --git a/composer.lock b/composer.lock
index 4f66fc6ee..b91c8901b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "614023b483badb5ec8720775dd2d3d12",
+    "content-hash": "2d4da4bb4787764fbe706a04311c3cbf",
     "packages": [
         {
             "name": "adhocore/json-comment",
@@ -123,24 +123,24 @@
         },
         {
             "name": "fgrosse/phpasn1",
-            "version": "v2.4.0",
+            "version": "v2.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/fgrosse/PHPASN1.git",
-                "reference": "eef488991d53e58e60c9554b09b1201ca5ba9296"
+                "reference": "42060ed45344789fb9f21f9f1864fc47b9e3507b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/fgrosse/PHPASN1/zipball/eef488991d53e58e60c9554b09b1201ca5ba9296",
-                "reference": "eef488991d53e58e60c9554b09b1201ca5ba9296",
+                "url": "https://api.github.com/repos/fgrosse/PHPASN1/zipball/42060ed45344789fb9f21f9f1864fc47b9e3507b",
+                "reference": "42060ed45344789fb9f21f9f1864fc47b9e3507b",
                 "shasum": ""
             },
             "require": {
-                "php": "~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0"
+                "php": "^7.1 || ^8.0"
             },
             "require-dev": {
                 "php-coveralls/php-coveralls": "~2.0",
-                "phpunit/phpunit": "^6.3 || ^7.0 || ^8.0"
+                "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0"
             },
             "suggest": {
                 "ext-bcmath": "BCmath is the fallback extension for big integer calculations",
@@ -192,9 +192,10 @@
             ],
             "support": {
                 "issues": "https://github.com/fgrosse/PHPASN1/issues",
-                "source": "https://github.com/fgrosse/PHPASN1/tree/v2.4.0"
+                "source": "https://github.com/fgrosse/PHPASN1/tree/v2.5.0"
             },
-            "time": "2021-12-11T12:41:06+00:00"
+            "abandoned": true,
+            "time": "2022-12-19T11:08:26+00:00"
         },
         {
             "name": "netresearch/jsonmapper",
@@ -1765,16 +1766,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.9.2",
+            "version": "1.9.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "d6fdf01c53978b6429f1393ba4afeca39cc68afa"
+                "reference": "d03bccee595e2146b7c9d174486b84f4dc61b0f2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/d6fdf01c53978b6429f1393ba4afeca39cc68afa",
-                "reference": "d6fdf01c53978b6429f1393ba4afeca39cc68afa",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/d03bccee595e2146b7c9d174486b84f4dc61b0f2",
+                "reference": "d03bccee595e2146b7c9d174486b84f4dc61b0f2",
                 "shasum": ""
             },
             "require": {
@@ -1804,7 +1805,7 @@
             ],
             "support": {
                 "issues": "https://github.com/phpstan/phpstan/issues",
-                "source": "https://github.com/phpstan/phpstan/tree/1.9.2"
+                "source": "https://github.com/phpstan/phpstan/tree/1.9.4"
             },
             "funding": [
                 {
@@ -1820,25 +1821,25 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-11-10T09:56:11+00:00"
+            "time": "2022-12-17T13:33:52+00:00"
         },
         {
             "name": "phpstan/phpstan-phpunit",
-            "version": "1.3.0",
+            "version": "1.3.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan-phpunit.git",
-                "reference": "4c06b7e3f2c40081334d86975350dda814bd064a"
+                "reference": "cd9c6938f8bbfcb6da3ed5a3c7ea60873825d088"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan-phpunit/zipball/4c06b7e3f2c40081334d86975350dda814bd064a",
-                "reference": "4c06b7e3f2c40081334d86975350dda814bd064a",
+                "url": "https://api.github.com/repos/phpstan/phpstan-phpunit/zipball/cd9c6938f8bbfcb6da3ed5a3c7ea60873825d088",
+                "reference": "cd9c6938f8bbfcb6da3ed5a3c7ea60873825d088",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.2 || ^8.0",
-                "phpstan/phpstan": "^1.9.0"
+                "phpstan/phpstan": "^1.9.3"
             },
             "conflict": {
                 "phpunit/phpunit": "<7.0"
@@ -1870,9 +1871,9 @@
             "description": "PHPUnit extensions and rules for PHPStan",
             "support": {
                 "issues": "https://github.com/phpstan/phpstan-phpunit/issues",
-                "source": "https://github.com/phpstan/phpstan-phpunit/tree/1.3.0"
+                "source": "https://github.com/phpstan/phpstan-phpunit/tree/1.3.2"
             },
-            "time": "2022-12-07T15:46:24+00:00"
+            "time": "2022-12-13T15:08:22+00:00"
         },
         {
             "name": "phpstan/phpstan-strict-rules",
@@ -1924,16 +1925,16 @@
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "9.2.19",
+            "version": "9.2.22",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "c77b56b63e3d2031bd8997fcec43c1925ae46559"
+                "reference": "e4bf60d2220b4baaa0572986b5d69870226b06df"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/c77b56b63e3d2031bd8997fcec43c1925ae46559",
-                "reference": "c77b56b63e3d2031bd8997fcec43c1925ae46559",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/e4bf60d2220b4baaa0572986b5d69870226b06df",
+                "reference": "e4bf60d2220b4baaa0572986b5d69870226b06df",
                 "shasum": ""
             },
             "require": {
@@ -1989,7 +1990,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/php-code-coverage/issues",
-                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.19"
+                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.22"
             },
             "funding": [
                 {
@@ -1997,7 +1998,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-11-18T07:47:47+00:00"
+            "time": "2022-12-18T16:40:55+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
diff --git a/src/data/bedrock/PotionTypeIdMap.php b/src/data/bedrock/PotionTypeIdMap.php
index eebab87e2..2e6fef3cc 100644
--- a/src/data/bedrock/PotionTypeIdMap.php
+++ b/src/data/bedrock/PotionTypeIdMap.php
@@ -33,13 +33,13 @@ final class PotionTypeIdMap{
 	 * @var PotionType[]
 	 * @phpstan-var array<int, PotionType>
 	 */
-	private array $idToEnum;
+	private array $idToEnum = [];
 
 	/**
 	 * @var int[]
 	 * @phpstan-var array<int, int>
 	 */
-	private array $enumToId;
+	private array $enumToId = [];
 
 	private function __construct(){
 		$this->register(PotionTypeIds::WATER, PotionType::WATER());
diff --git a/tests/phpstan/configs/phpstan-bugs.neon b/tests/phpstan/configs/phpstan-bugs.neon
index c84371b11..3ee56e8be 100644
--- a/tests/phpstan/configs/phpstan-bugs.neon
+++ b/tests/phpstan/configs/phpstan-bugs.neon
@@ -15,11 +15,6 @@ parameters:
 			count: 1
 			path: ../../../src/entity/projectile/Projectile.php
 
-		-
-			message: "#^Empty array passed to foreach\\.$#"
-			count: 1
-			path: ../../../src/network/mcpe/cache/ChunkCache.php
-
 		-
 			message: "#^Match arm comparison between 4 and 4 is always true\\.$#"
 			count: 1
@@ -51,7 +46,7 @@ parameters:
 			path: ../../../src/plugin/PluginManager.php
 
 		-
-			message: "#^Offset \\(int\\|string\\) on non\\-empty\\-array\\<pocketmine\\\\plugin\\\\Plugin\\> in isset\\(\\) always exists and is not nullable\\.$#"
+			message: "#^Offset \\(int\\|string\\) on array\\<pocketmine\\\\plugin\\\\Plugin\\> in isset\\(\\) always exists and is not nullable\\.$#"
 			count: 1
 			path: ../../../src/plugin/PluginManager.php
 
@@ -70,11 +65,6 @@ parameters:
 			count: 1
 			path: ../../../src/thread/Worker.php
 
-		-
-			message: "#^Offset \\(int\\|string\\) on non\\-empty\\-array\\<pocketmine\\\\world\\\\World\\> in isset\\(\\) always exists and is not nullable\\.$#"
-			count: 1
-			path: ../../../src/world/WorldManager.php
-
 		-
 			message: "#^Call to function is_resource\\(\\) with resource will always evaluate to true\\.$#"
 			count: 2