diff --git a/modules/graphics/src/main/java/javafx/stage/Window.java b/modules/graphics/src/main/java/javafx/stage/Window.java
--- a/modules/graphics/src/main/java/javafx/stage/Window.java
+++ b/modules/graphics/src/main/java/javafx/stage/Window.java
@@ -28,8 +28,10 @@
 import java.security.AllPermission;
 import java.security.AccessControlContext;
 import java.security.AccessController;
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
+import java.util.List;
 
 import javafx.beans.property.DoubleProperty;
 import javafx.beans.property.DoublePropertyBase;
@@ -134,20 +136,25 @@
     }
 
     /**
-     * Return all Windows
+     * Returns a list containing a reference to the currently existing JavaFX windows. The list, whilst mutable, is
+     * simply a reflection of the state at that moment in time - modifying the list will have no impact at all.
      *
-     * @return Iterator of all Windows
-     * @treatAsPrivate implementation detail
-     * @deprecated This is an internal API that is not intended for use and will be removed in the next version
+     * <p>It is strong encouraged that developers do not retain a reference to this list outside of their immediate
+     * use case (i.e. within the relevant method), as doing so can lead to memory leaks.</p>
+     *
+     * @return A list containing all windows currently showing.
+     * @since 9
      */
-    @Deprecated
-    public static Iterator<Window> impl_getWindows() {
+    public static List<Window> getWindows() {
         final SecurityManager securityManager = System.getSecurityManager();
         if (securityManager != null) {
             securityManager.checkPermission(new AllPermission());
         }
 
-        return (Iterator<Window>) windowQueue.iterator();
+        Iterator<Window> it = (Iterator<Window>) windowQueue.iterator();
+        List<Window> windows = new ArrayList<>();
+        it.forEachRemaining(windows::add);
+        return windows;
     }
 
     final AccessControlContext acc = AccessController.getContext();