--- a/browser/base/content/browser.xul
+++ b/browser/base/content/browser.xul
@@ -161,17 +161,18 @@
            overflowpadding="30" />
 
     <panel id="DateTimePickerPanel"
            type="arrow"
            hidden="true"
            orient="vertical"
            noautofocus="true"
            consumeoutsideclicks="false"
-           level="parent">
+           level="parent"
+           tabspecific="true">
       <iframe id="dateTimePopupFrame"/>
     </panel>
 
     <!-- for select dropdowns. The menupopup is what shows the list of options,
          and the popuponly menulist makes things like the menuactive attributes
          work correctly on the menupopup. ContentSelectDropdown expects the
          popuponly menulist to be its immediate parent. -->
     <menulist popuponly="true" id="ContentSelectDropdown" hidden="true">