diff --git a/browser/base/content/browser-kde.xul b/browser/base/content/browser-kde.xul
index 0f446c81f1f4..f4ffd8cb9c4f 100644
--- a/browser/base/content/browser-kde.xul
+++ b/browser/base/content/browser-kde.xul
@@ -80,6 +80,8 @@
       <menuitem id="context_reloadTab" label="&reloadTab.label;" accesskey="&reloadTab.accesskey;"
                 oncommand="gBrowser.reloadTab(TabContextMenu.contextTab);"/>
       <menuitem id="context_toggleMuteTab" oncommand="TabContextMenu.contextTab.toggleMuteAudio();"/>
+      <menuitem id="context_duplicateTab" label="Duplicate Tab" accesskey="D"
+                oncommand="duplicateTabIn(TabContextMenu.contextTab, 'tab');"/>
       <menuseparator/>
       <menuitem id="context_pinTab" label="&pinTab.label;"
                 accesskey="&pinTab.accesskey;"
@@ -228,62 +230,6 @@
       </hbox>
     </panel>
 
-    <!-- UI tour experience -->
-    <panel id="UITourTooltip"
-           type="arrow"
-           hidden="true"
-           noautofocus="true"
-           noautohide="true"
-           align="start"
-           orient="vertical"
-           role="alert">
-     <vbox>
-      <hbox id="UITourTooltipBody">
-        <image id="UITourTooltipIcon"/>
-        <vbox flex="1">
-          <hbox id="UITourTooltipTitleContainer">
-            <label id="UITourTooltipTitle" flex="1"/>
-            <toolbarbutton id="UITourTooltipClose" class="close-icon"
-                           tooltiptext="&uiTour.infoPanel.close;"/>
-          </hbox>
-          <description id="UITourTooltipDescription" flex="1"/>
-        </vbox>
-      </hbox>
-      <hbox id="UITourTooltipButtons" flex="1" align="center"/>
-     </vbox>
-    </panel>
-    <!-- type="default" forces frames to be created so that the panel's size can be determined -->
-    <panel id="UITourHighlightContainer"
-           type="default"
-           hidden="true"
-           noautofocus="true"
-           noautohide="true"
-           flip="none"
-           consumeoutsideclicks="false"
-           mousethrough="always">
-      <box id="UITourHighlight"></box>
-    </panel>
-
-    <panel id="social-share-panel"
-           class="social-panel"
-           type="arrow"
-           orient="vertical"
-           onpopupshowing="SocialShare.onShowing()"
-           onpopuphidden="SocialShare.onHidden()"
-           hidden="true">
-      <hbox class="social-share-toolbar">
-        <toolbarbutton id="manage-share-providers" class="share-provider-button"
-                       tooltiptext="&social.addons.label;"
-                       oncommand="BrowserOpenAddonsMgr('addons://list/service');
-                                  this.parentNode.parentNode.hidePopup();"/>
-        <arrowscrollbox id="social-share-provider-buttons" orient="horizontal" flex="1" pack="end">
-          <toolbarbutton id="add-share-provider" class="share-provider-button" type="radio"
-                         group="share-providers" tooltiptext="&findShareServices.label;"
-                         oncommand="SocialShare.showDirectory()"/>
-        </arrowscrollbox>
-      </hbox>
-      <hbox id="share-container" flex="1"/>
-    </panel>
     <panel id="sidebarMenu-popup"
            class="cui-widget-panel"
            role="group"
@@ -501,11 +447,6 @@
 #endif
     </tooltip>
 
-    <tooltip id="share-button-tooltip" onpopupshowing="SocialShare.createTooltip(event);">
-      <label class="tooltip-label"/>
-      <label class="tooltip-label"/>
-    </tooltip>
-
 #include popup-notifications.inc
 
 #include ../../components/customizableui/content/panelUI.inc.xul