diff --git a/browser/components/places/content/places-menupopup.js b/browser/components/places/content/places-menupopup.js
index 1f948a89be375..5d32b1b39eea6 100644
--- a/browser/components/places/content/places-menupopup.js
+++ b/browser/components/places/content/places-menupopup.js
@@ -134,7 +134,7 @@
 
     get markup() {
       return `
-      <html:link rel="stylesheet" href="chrome://global/content/widgets.css" />
+      <html:link rel="stylesheet" href="chrome://global/skin/global.css" />
       <html:style>${this.commonStyles}${this.styles}</html:style>
       <hbox flex="1" part="innerbox">
         <vbox class="menupopup-drop-indicator-bar" hidden="true">
@@ -697,7 +697,7 @@
 
     get markup() {
       return `
-      <html:link rel="stylesheet" href="chrome://global/content/widgets.css" />
+      <html:link rel="stylesheet" href="chrome://global/skin/global.css" />
       <html:style>${this.commonStyles}</html:style>
       <vbox class="panel-arrowcontainer" flex="1">
         <box class="panel-arrowbox">
diff --git a/toolkit/content/widgets/scrollbox.xml b/toolkit/content/widgets/scrollbox.xml
index 57b820f55074b..5b28f0b4c779f 100644
--- a/toolkit/content/widgets/scrollbox.xml
+++ b/toolkit/content/widgets/scrollbox.xml
@@ -357,11 +357,16 @@
 
       <method name="_getScrollableElements">
         <body><![CDATA[
-          var nodes = this.children;
-          if (nodes.length == 1 &&
-              nodes[0].localName == "children" &&
-              nodes[0].namespaceURI == "http://www.mozilla.org/xbl") {
-            nodes = document.getBindingParent(this).children;
+          let nodes = this.children;
+          if (nodes.length == 1) {
+            let node = nodes[0];
+            if (node.localName == "children" &&
+                node.namespaceURI == "http://www.mozilla.org/xbl") {
+              nodes = document.getBindingParent(this).children;
+            } else if (node.localName == "slot" &&
+                       node.namespaceURI == "http://www.w3.org/1999/xhtml") {
+              nodes = node.getRootNode().host.children;
+            }
           }
 
           return Array.prototype.filter.call(nodes, this._canScrollToElement, this);
