It has come to my attention that, after installing, activating, then uninstalling QTTabBar, you can no longer hide the menu bar. Apparently, the original QTTabBar has the same problem. This problem will be addressed in the next release. If anyone would like to uninstall QTTabBar before then and regain the ability to hide the menu bar, no worries. After you’ve uninstalled QTTabBar, simply navigate to the registry key HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser and delete the ITBar7Layout value.