Hi Ravi,
When I try it in the demo it changes instantly. Changing the ApplicationName does cause a title bar rearrange but still, that should occur near instantly, even if you have QAT items, and contextual tab groups visible. All those are visible when I'm testing in the demo.
Here is the test code I put in MainControl.xaml.cs in our demo:
private void applicationHelpCommand_Execute(object sender, ExecutedRoutedEventArgs e) {
RibbonWindow window = (RibbonWindow)ActiproSoftware.Windows.Media.VisualTreeHelperExtended.GetAncestor(ribbon, typeof(RibbonWindow)); window.ApplicationName = new string('m', (int)(new Random().NextDouble() * 50));
}
I can hold down F1 while that window is displayed and I see the title bar constantly rearranging, which is correct and means it's running fast.
If you can duplicate this issue in our sample, or in a project of your own, please email the repro to us so we can look at it. Thanks!