--- a/browser/base/content/browser-pageActions.js
+++ b/browser/base/content/browser-pageActions.js
@@ -214,16 +214,17 @@ var BrowserPageActions = {
     panelNode.id = this._activatedActionPanelID;
     panelNode.classList.add("cui-widget-panel");
     panelNode.setAttribute("actionID", action.id);
     panelNode.setAttribute("role", "group");
     panelNode.setAttribute("type", "arrow");
     panelNode.setAttribute("flip", "slide");
     panelNode.setAttribute("noautofocus", "true");
     panelNode.setAttribute("tabspecific", "true");
+    panelNode.setAttribute("photon", "true");
 
     let panelViewNode = null;
     let iframeNode = null;
 
     if (action.subview) {
       let multiViewNode = document.createElement("photonpanelmultiview");
       panelViewNode = this._makePanelViewNodeForAction(action, true);
       multiViewNode.appendChild(panelViewNode);