diff --git a/CHANGELOG.md b/CHANGELOG.md
index 695460d9..17c23f50 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 6.0.0-beta.14
+
+- Fixed User Script remove methods
+- Fixed macOS available checks for XCode 14.1
+
 ## 6.0.0-beta.13
 
 - Added `ContentBlockerActionType.BLOCK_COOKIES` and `ContentBlockerActionType.IGNORE_PREVIOUS_RULES` for iOS and macOS platforms
diff --git a/ios/Classes/Types/WKUserContentController.swift b/ios/Classes/Types/WKUserContentController.swift
index 53c901a7..eecba322 100644
--- a/ios/Classes/Types/WKUserContentController.swift
+++ b/ios/Classes/Types/WKUserContentController.swift
@@ -276,7 +276,7 @@ extension WKUserContentController {
 
         var userScriptsUpdated: [WKUserScript] = []
         for script in userScripts {
-            if !userScripts.contains(script) {
+            if !scriptsToRemove.contains(script) {
                 userScriptsUpdated.append(script)
             }
         }
@@ -296,6 +296,7 @@ extension WKUserContentController {
         for script in allUserOnlyScripts {
             if let scriptName = script.groupName, scriptName == groupName {
                 scriptsToRemove.append(script)
+                userOnlyScripts[script.injectionTime]!.remove(script)
             }
         }
         removeUserScripts(scriptsToRemove: scriptsToRemove, shouldAddPreviousScripts: shouldAddPreviousScripts)
@@ -307,6 +308,7 @@ extension WKUserContentController {
         for script in allPluginScripts {
             if let scriptName = script.groupName, scriptName == groupName {
                 scriptsToRemove.append(script)
+                pluginScripts[script.injectionTime]!.remove(script)
             }
         }
         removeUserScripts(scriptsToRemove: scriptsToRemove, shouldAddPreviousScripts: shouldAddPreviousScripts)
diff --git a/lib/src/in_app_webview/in_app_webview_controller.dart b/lib/src/in_app_webview/in_app_webview_controller.dart
index d935365a..23a0e213 100644
--- a/lib/src/in_app_webview/in_app_webview_controller.dart
+++ b/lib/src/in_app_webview/in_app_webview_controller.dart
@@ -56,7 +56,10 @@ class InAppWebViewController {
   static MethodChannel _staticChannel = IN_APP_WEBVIEW_STATIC_CHANNEL;
   Map<String, JavaScriptHandlerCallback> javaScriptHandlersMap =
       HashMap<String, JavaScriptHandlerCallback>();
-  List<UserScript> _userScripts = [];
+  final Map<UserScriptInjectionTime, List<UserScript>> _userScripts = {
+    UserScriptInjectionTime.AT_DOCUMENT_START: <UserScript>[],
+    UserScriptInjectionTime.AT_DOCUMENT_END: <UserScript>[]
+  };
   Set<String> _webMessageListenerObjNames = Set();
   Map<String, ScriptHtmlTagAttributes> _injectedScriptsFromURL = {};
 
@@ -88,8 +91,23 @@ class InAppWebViewController {
       }
     });
     this._webview = webview;
-    this._userScripts =
-        List<UserScript>.from(webview.initialUserScripts ?? <UserScript>[]);
+
+    final initialUserScripts = webview.initialUserScripts;
+    if (initialUserScripts != null) {
+      for (final userScript in initialUserScripts) {
+        if (userScript.injectionTime ==
+            UserScriptInjectionTime.AT_DOCUMENT_START) {
+          this
+              ._userScripts[UserScriptInjectionTime.AT_DOCUMENT_START]
+              ?.add(userScript);
+        } else {
+          this
+              ._userScripts[UserScriptInjectionTime.AT_DOCUMENT_END]
+              ?.add(userScript);
+        }
+      }
+    }
+
     this._init();
   }
 
@@ -99,8 +117,21 @@ class InAppWebViewController {
       UnmodifiableListView<UserScript>? initialUserScripts) {
     this._channel = channel;
     this._inAppBrowser = inAppBrowser;
-    this._userScripts =
-        List<UserScript>.from(initialUserScripts ?? <UserScript>[]);
+
+    if (initialUserScripts != null) {
+      for (final userScript in initialUserScripts) {
+        if (userScript.injectionTime ==
+            UserScriptInjectionTime.AT_DOCUMENT_START) {
+          this
+              ._userScripts[UserScriptInjectionTime.AT_DOCUMENT_START]
+              ?.add(userScript);
+        } else {
+          this
+              ._userScripts[UserScriptInjectionTime.AT_DOCUMENT_END]
+              ?.add(userScript);
+        }
+      }
+    }
     this._init();
   }
 
@@ -2793,8 +2824,9 @@ class InAppWebViewController {
 
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent('userScript', () => userScript.toMap());
-    if (!_userScripts.contains(userScript)) {
-      _userScripts.add(userScript);
+    if (!(_userScripts[userScript.injectionTime]?.contains(userScript) ??
+        false)) {
+      _userScripts[userScript.injectionTime]?.add(userScript);
       await _channel.invokeMethod('addUserScript', args);
     }
   }
@@ -2834,12 +2866,12 @@ class InAppWebViewController {
     assert(_webview?.windowId == null ||
         defaultTargetPlatform != TargetPlatform.iOS);
 
-    var index = _userScripts.indexOf(userScript);
-    if (index == -1) {
+    var index = _userScripts[userScript.injectionTime]?.indexOf(userScript);
+    if (index == null || index == -1) {
       return false;
     }
 
-    _userScripts.remove(userScript);
+    _userScripts[userScript.injectionTime]?.remove(userScript);
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent('userScript', () => userScript.toMap());
     args.putIfAbsent('index', () => index);
@@ -2863,6 +2895,22 @@ class InAppWebViewController {
     assert(_webview?.windowId == null ||
         defaultTargetPlatform != TargetPlatform.iOS);
 
+    final List<UserScript> userScriptsAtDocumentStart = List.from(
+        _userScripts[UserScriptInjectionTime.AT_DOCUMENT_START] ?? []);
+    for (final userScript in userScriptsAtDocumentStart) {
+      if (userScript.groupName == groupName) {
+        _userScripts[userScript.injectionTime]?.remove(userScript);
+      }
+    }
+
+    final List<UserScript> userScriptsAtDocumentEnd =
+        List.from(_userScripts[UserScriptInjectionTime.AT_DOCUMENT_END] ?? []);
+    for (final userScript in userScriptsAtDocumentEnd) {
+      if (userScript.groupName == groupName) {
+        _userScripts[userScript.injectionTime]?.remove(userScript);
+      }
+    }
+
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent('groupName', () => groupName);
     await _channel.invokeMethod('removeUserScriptsByGroupName', args);
@@ -2884,8 +2932,8 @@ class InAppWebViewController {
     assert(_webview?.windowId == null ||
         defaultTargetPlatform != TargetPlatform.iOS);
 
-    for (var i = 0; i < userScripts.length; i++) {
-      await removeUserScript(userScript: userScripts[i]);
+    for (final userScript in userScripts) {
+      await removeUserScript(userScript: userScript);
     }
   }
 
@@ -2903,7 +2951,9 @@ class InAppWebViewController {
     assert(_webview?.windowId == null ||
         defaultTargetPlatform != TargetPlatform.iOS);
 
-    _userScripts.clear();
+    _userScripts[UserScriptInjectionTime.AT_DOCUMENT_START]?.clear();
+    _userScripts[UserScriptInjectionTime.AT_DOCUMENT_END]?.clear();
+
     Map<String, dynamic> args = <String, dynamic>{};
     await _channel.invokeMethod('removeAllUserScripts', args);
   }
diff --git a/lib/src/in_app_webview/in_app_webview_settings.dart b/lib/src/in_app_webview/in_app_webview_settings.dart
index f2719551..00914197 100755
--- a/lib/src/in_app_webview/in_app_webview_settings.dart
+++ b/lib/src/in_app_webview/in_app_webview_settings.dart
@@ -1174,7 +1174,7 @@ class InAppWebViewSettings_ {
   ///
   ///**NOTE for iOS**: available on iOS 15.4+.
   ///
-  ///**NOTE for MacOS**: available on MacOS 12.0+.
+  ///**NOTE for MacOS**: available on MacOS 12.3+.
   ///
   ///**Supported Platforms/Implementations**:
   ///- iOS
@@ -1199,7 +1199,7 @@ class InAppWebViewSettings_ {
   ///
   ///**NOTE for iOS**: available on iOS 15.4+.
   ///
-  ///**NOTE for MacOS**: available on MacOS 12.0+.
+  ///**NOTE for MacOS**: available on MacOS 12.3+.
   ///
   ///**Supported Platforms/Implementations**:
   ///- iOS
diff --git a/lib/src/in_app_webview/in_app_webview_settings.g.dart b/lib/src/in_app_webview/in_app_webview_settings.g.dart
index 39821929..3e9af0ce 100644
--- a/lib/src/in_app_webview/in_app_webview_settings.g.dart
+++ b/lib/src/in_app_webview/in_app_webview_settings.g.dart
@@ -1130,7 +1130,7 @@ class InAppWebViewSettings {
   ///
   ///**NOTE for iOS**: available on iOS 15.4+.
   ///
-  ///**NOTE for MacOS**: available on MacOS 12.0+.
+  ///**NOTE for MacOS**: available on MacOS 12.3+.
   ///
   ///**Supported Platforms/Implementations**:
   ///- iOS
@@ -1155,7 +1155,7 @@ class InAppWebViewSettings {
   ///
   ///**NOTE for iOS**: available on iOS 15.4+.
   ///
-  ///**NOTE for MacOS**: available on MacOS 12.0+.
+  ///**NOTE for MacOS**: available on MacOS 12.3+.
   ///
   ///**Supported Platforms/Implementations**:
   ///- iOS
diff --git a/lib/src/types/user_script.dart b/lib/src/types/user_script.dart
index 8836dbaa..6e159842 100644
--- a/lib/src/types/user_script.dart
+++ b/lib/src/types/user_script.dart
@@ -27,7 +27,7 @@ class UserScript_ {
   ///Specify true to inject the script only into the main frame, or false to inject it into all frames.
   ///The default value is `true`.
   ///
-  ///**NOTE**: available only on iOS.
+  ///**NOTE**: available only on iOS and MacOS.
   bool forMainFrameOnly;
 
   ///A set of matching rules for the allowed origins.
diff --git a/lib/src/types/user_script.g.dart b/lib/src/types/user_script.g.dart
index aafa9dc4..414f7c8e 100644
--- a/lib/src/types/user_script.g.dart
+++ b/lib/src/types/user_script.g.dart
@@ -25,7 +25,7 @@ class UserScript {
   ///Specify true to inject the script only into the main frame, or false to inject it into all frames.
   ///The default value is `true`.
   ///
-  ///**NOTE**: available only on iOS.
+  ///**NOTE**: available only on iOS and MacOS.
   bool forMainFrameOnly;
 
   ///A set of matching rules for the allowed origins.
diff --git a/macos/Classes/InAppWebView/InAppWebView.swift b/macos/Classes/InAppWebView/InAppWebView.swift
index 7f015033..5c8bf04f 100755
--- a/macos/Classes/InAppWebView/InAppWebView.swift
+++ b/macos/Classes/InAppWebView/InAppWebView.swift
@@ -175,7 +175,7 @@ public class InAppWebView: WKWebView, WKUIDelegate,
                 configuration.preferences.isTextInteractionEnabled = settings.isTextInteractionEnabled
             }
             
-            if #available(macOS 12.0, *) {
+            if #available(macOS 12.3, *) {
                 configuration.preferences.isSiteSpecificQuirksModeEnabled = settings.isSiteSpecificQuirksModeEnabled
                 configuration.preferences.isElementFullscreenEnabled = settings.isElementFullscreenEnabled
             }
@@ -725,7 +725,7 @@ public class InAppWebView: WKWebView, WKUIDelegate,
                 self.underPageBackgroundColor = NSColor(hexString: underPageBackgroundColor)
             }
         }
-        if #available(macOS 12.0, *) {
+        if #available(macOS 12.3, *) {
             if newSettingsMap["isSiteSpecificQuirksModeEnabled"] != nil, settings?.isSiteSpecificQuirksModeEnabled != newSettings.isSiteSpecificQuirksModeEnabled {
                 configuration.preferences.isSiteSpecificQuirksModeEnabled = newSettings.isSiteSpecificQuirksModeEnabled
             }
diff --git a/macos/Classes/InAppWebView/InAppWebViewSettings.swift b/macos/Classes/InAppWebView/InAppWebViewSettings.swift
index 5a83d2d1..6ecbd559 100755
--- a/macos/Classes/InAppWebView/InAppWebViewSettings.swift
+++ b/macos/Classes/InAppWebView/InAppWebViewSettings.swift
@@ -100,6 +100,8 @@ public class InAppWebViewSettings: ISettings<InAppWebView> {
             }
             if #available(macOS 12.0, *) {
                 realSettings["underPageBackgroundColor"] = webView.underPageBackgroundColor.hexString
+            }
+            if #available(macOS 12.3, *) {
                 realSettings["isSiteSpecificQuirksModeEnabled"] = configuration.preferences.isSiteSpecificQuirksModeEnabled
                 realSettings["isElementFullscreenEnabled"] = configuration.preferences.isElementFullscreenEnabled
             }
diff --git a/macos/Classes/InAppWebView/WebViewChannelDelegate.swift b/macos/Classes/InAppWebView/WebViewChannelDelegate.swift
index 59ac3dd3..c8957c23 100644
--- a/macos/Classes/InAppWebView/WebViewChannelDelegate.swift
+++ b/macos/Classes/InAppWebView/WebViewChannelDelegate.swift
@@ -595,7 +595,7 @@ public class WebViewChannelDelegate : ChannelDelegate {
             break
         case .isInFullscreen:
             if let webView = webView {
-                if #available(macOS 12.0, *) {
+                if #available(macOS 13.0, *) {
                     result(webView.fullscreenState == .inFullscreen)
                 } else {
                     result(webView.inFullscreen)
diff --git a/macos/Classes/Types/WKUserContentController.swift b/macos/Classes/Types/WKUserContentController.swift
index fb17db60..59f8f126 100644
--- a/macos/Classes/Types/WKUserContentController.swift
+++ b/macos/Classes/Types/WKUserContentController.swift
@@ -276,7 +276,7 @@ extension WKUserContentController {
 
         var userScriptsUpdated: [WKUserScript] = []
         for script in userScripts {
-            if !userScripts.contains(script) {
+            if !scriptsToRemove.contains(script) {
                 userScriptsUpdated.append(script)
             }
         }
@@ -296,6 +296,7 @@ extension WKUserContentController {
         for script in allUserOnlyScripts {
             if let scriptName = script.groupName, scriptName == groupName {
                 scriptsToRemove.append(script)
+                userOnlyScripts[script.injectionTime]!.remove(script)
             }
         }
         removeUserScripts(scriptsToRemove: scriptsToRemove, shouldAddPreviousScripts: shouldAddPreviousScripts)
@@ -307,6 +308,7 @@ extension WKUserContentController {
         for script in allPluginScripts {
             if let scriptName = script.groupName, scriptName == groupName {
                 scriptsToRemove.append(script)
+                pluginScripts[script.injectionTime]!.remove(script)
             }
         }
         removeUserScripts(scriptsToRemove: scriptsToRemove, shouldAddPreviousScripts: shouldAddPreviousScripts)
diff --git a/pubspec.yaml b/pubspec.yaml
index 6e760d4a..287fa7ec 100755
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_inappwebview
 description: A Flutter plugin that allows you to add an inline webview, to use an headless webview, and to open an in-app browser window.
-version: 6.0.0-beta.13
+version: 6.0.0-beta.14
 homepage: https://inappwebview.dev/
 repository: https://github.com/pichillilorenzo/flutter_inappwebview
 issue_tracker: https://github.com/pichillilorenzo/flutter_inappwebview/issues