diff --git a/additions/juggler/content/FrameTree.js b/additions/juggler/content/FrameTree.js
index 65672be..c67beb4 100644
--- a/additions/juggler/content/FrameTree.js
+++ b/additions/juggler/content/FrameTree.js
@@ -411,7 +411,11 @@ class Frame {
       this._parentFrame = parentFrame;
       parentFrame._children.add(this);
     }
+    
+    this.allowMW = ChromeUtils.camouGetBool('allowMainWorld', false);
+    this.forceScopeAccess = ChromeUtils.camouGetBool('forceScopeAccess', false);
 
+    this.masterSandbox = undefined;
     this._lastCommittedNavigationId = null;
     this._pendingNavigationId = null;
 
@@ -505,21 +509,44 @@ class Frame {
     };
   }
 
-  _createIsolatedContext(name) {
-    const principal = [this.domWindow()]; // extended principal
-    const sandbox = Cu.Sandbox(principal, {
-      sandboxPrototype: this.domWindow(),
-      wantComponents: false,
-      wantExportHelpers: false,
-      wantXrays: true,
-    });
+  // Camoufox: Add a "God mode" master sandbox with it's own compartment
+  getMasterSandbox() {
+    if (!this.masterSandbox) {
+      this.masterSandbox = Cu.Sandbox(
+        Services.scriptSecurityManager.getSystemPrincipal(),
+        {
+          sandboxPrototype: this.domWindow(),
+          wantComponents: false,
+          wantExportHelpers: false,
+          wantXrays: true,
+          freshCompartment: true,
+        }
+      );
+    }
+    return this.masterSandbox;
+  }
+
+  _createIsolatedContext(name, useMaster=false) {
+    let sandbox;
+    // Camoufox: Use the master sandbox (with system principle scope access)
+    if (useMaster && this.forceScopeAccess) {
+      sandbox = this.getMasterSandbox();
+    } else {
+      // Standard access (run in domWindow principal)
+      sandbox = Cu.Sandbox([this.domWindow()], {
+        sandboxPrototype: this.domWindow(),
+        wantComponents: false,
+        wantExportHelpers: false,
+        wantXrays: true,
+      });
+    }
     const world = this._runtime.createExecutionContext(this.domWindow(), sandbox, {
       frameId: this.id(),
       name,
     });
     // Camoufox: Create a main world for the isolated context
-    if (ChromeUtils.camouGetBool('allowMainWorld', false)) {
-      const mainWorld = this._runtime.createMW(this.domWindow(), this.domWindow());
+    if (this.allowMW) {
+      const mainWorld = this._runtime.createMW(this.domWindow(), sandbox);
       world.mainEquivalent = mainWorld;
     }
     this._worldNameToContext.set(name, world);
@@ -559,7 +586,7 @@ class Frame {
       this._runtime.destroyExecutionContext(context);
     this._worldNameToContext.clear();
     // Camoufox: Scope the initial execution context to prevent leaks
-    this._createIsolatedContext('');
+    this._createIsolatedContext('', true);
     for (const [name, world] of this._frameTree._isolatedWorlds) {
       if (name)
         this._createIsolatedContext(name);
diff --git a/patches/shadow-root-bypass.patch b/patches/shadow-root-bypass.patch
new file mode 100644
index 0000000..b8a9ac1
--- /dev/null
+++ b/patches/shadow-root-bypass.patch
@@ -0,0 +1,14 @@
+diff --git a/dom/webidl/Element.webidl b/dom/webidl/Element.webidl
+index 7163fac826..c0c201e29d 100644
+--- a/dom/webidl/Element.webidl
++++ b/dom/webidl/Element.webidl
+@@ -288,6 +288,9 @@ partial interface Element {
+   [BinaryName="shadowRootByMode"]
+   readonly attribute ShadowRoot? shadowRoot;
+ 
++  [Func="Document::IsCallerChromeOrAddon", BinaryName="shadowRoot"]
++  readonly attribute ShadowRoot? shadowRootUnl;
++
+   [Func="Document::IsCallerChromeOrAddon", BinaryName="shadowRoot"]
+   readonly attribute ShadowRoot? openOrClosedShadowRoot;
+ 
diff --git a/settings/camoucfg.jvv b/settings/camoucfg.jvv
index 4ac015f..f87844f 100644
--- a/settings/camoucfg.jvv
+++ b/settings/camoucfg.jvv
@@ -292,6 +292,7 @@
     "showcursor": "bool",
 
     "allowMainWorld": "bool",
+    "forceScopeAccess": "bool",
     "memorysaver": "bool",
     "addons": "array[str]",
     "debug": "bool"
diff --git a/settings/properties.json b/settings/properties.json
index 22262ed..f8bd8a2 100644
--- a/settings/properties.json
+++ b/settings/properties.json
@@ -94,6 +94,7 @@
   { "property": "mediaDevices:speakers", "type": "uint" },
   { "property": "mediaDevices:enabled", "type": "bool" },
   { "property": "allowMainWorld", "type": "bool" },
+  { "property": "forceScopeAccess", "type": "bool" },
   { "property": "memorysaver", "type": "bool" },
   { "property": "addons", "type": "array" },
   { "property": "debug", "type": "bool" }