diff --git a/Source/WebCore/accessibility/AccessibilityObject.cpp b/Source/WebCore/accessibility/AccessibilityObject.cpp
index f10a1519..523dfd46 100644
--- a/Source/WebCore/accessibility/AccessibilityObject.cpp
+++ b/Source/WebCore/accessibility/AccessibilityObject.cpp
@@ -70,6 +70,7 @@
 #include "RenderWidget.h"
 #include "RenderedPosition.h"
 #include "RuntimeEnabledFeatures.h"
+#include "ScriptDisallowedScope.h"
 #include "Settings.h"
 #include "TextCheckerClient.h"
 #include "TextCheckingHelper.h"
@@ -1783,7 +1784,11 @@ void AccessibilityObject::updateBackingStore()
     // Updating the layout may delete this object.
     RefPtr<AccessibilityObject> protectedThis(this);
     if (auto* document = this->document()) {
-        if (!document->view()->layoutContext().isInRenderTreeLayout() && !document->inRenderTreeUpdate() && !document->inStyleRecalc())
+        if (!document->view()->layoutContext().isInRenderTreeLayout()
+            && !document->inRenderTreeUpdate()
+            && !document->inStyleRecalc()
+            && ScriptDisallowedScope::InMainThread::isScriptAllowed())
+
             document->updateLayoutIgnorePendingStylesheets();
     }
     updateChildrenIfNecessary();