diff -r 000000000000 -r 6474c204b198 browser/components/sessionstore/test/browser_682507.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/sessionstore/test/browser_682507.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function test() {
+  Services.prefs.setBoolPref("browser.sessionstore.restore_on_demand", true);
+  gBrowser.addTab("about:mozilla");
+
+  ss.setTabState(gBrowser.tabs[1], ss.getTabState(gBrowser.tabs[1]));
+  ok(gBrowser.tabs[1].hasAttribute("pending"), "second tab should have 'pending' attribute");
+
+  gBrowser.selectedTab = gBrowser.tabs[1];
+  ok(!gBrowser.tabs[1].hasAttribute("pending"), "second tab should have not 'pending' attribute");
+
+  gBrowser.removeTab(gBrowser.tabs[1]);
+  Services.prefs.clearUserPref("browser.sessionstore.restore_on_demand");
+}