diff -r 000000000000 -r 6474c204b198 browser/components/tabview/test/browser_tabview_bug643392.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/tabview/test/browser_tabview_bug643392.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,54 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+let state = {
+  windows: [{
+    tabs: [{
+      entries: [{ url: "about:mozilla" }],
+      hidden: true,
+      extData: {"tabview-tab": '{"url":"about:mozilla","groupID":1,"bounds":{"left":20,"top":20,"width":20,"height":20}}'}
+    },{
+      entries: [{ url: "about:mozilla" }],
+      hidden: false,
+      extData: {"tabview-tab": '{"url":"about:mozilla","groupID":2,"bounds":{"left":20,"top":20,"width":20,"height":20}}'},
+    }],
+    selected: 2,
+    extData: {
+      "tabview-groups": '{"nextID":3,"activeGroupId":2}',
+      "tabview-group":
+        '{"1":{"bounds":{"left":15,"top":5,"width":280,"height":232},"id":1},' +
+        '"2":{"bounds":{"left":309,"top":5,"width":267,"height":226},"id":2}}'
+    }
+  }]
+};
+
+function test() {
+  waitForExplicitFinish();
+
+  newWindowWithState(state, function (win) {
+    registerCleanupFunction(function () win.close());
+
+    is(win.gBrowser.tabs.length, 2, "two tabs");
+
+    let opts = {animate: true, byMouse: true};
+    win.gBrowser.removeTab(win.gBrowser.visibleTabs[0], opts);
+
+    let checkTabCount = function () {
+      if (win.gBrowser.tabs.length > 1) {
+        executeSoon(checkTabCount);
+        return;
+      }
+
+      is(win.gBrowser.tabs.length, 1, "one tab");
+
+      showTabView(function () {
+        let cw = win.TabView.getContentWindow();
+        is(cw.TabItems.items.length, 1, "one tabItem");
+
+        waitForFocus(finish);
+      }, win);
+    };
+
+    checkTabCount();
+  });
+}