diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index 43b64bb0..8835df70 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -22,7 +22,7 @@ class Frontend extends TextScanner {
         super(
             window,
             ignoreNodes,
-            [popup.container],
+            [popup.getContainer()],
             [(x, y) => this.popup.containsPoint(x, y)]
         );
 
diff --git a/ext/fg/js/popup.js b/ext/fg/js/popup.js
index 46a09548..2af734a9 100644
--- a/ext/fg/js/popup.js
+++ b/ext/fg/js/popup.js
@@ -135,6 +135,10 @@ class Popup {
         }
     }
 
+    getContainer() {
+        return this.container;
+    }
+
     getContainerRect() {
         return this.container.getBoundingClientRect();
     }