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I came accros a very strange behaviour when using the reorder feature. I have MainPage.xaml with ApplicationBar (lets call it AppBar1) and Settings.xaml with another ApplicationBar (lets call it AppBar2) and DataBountListBox . When on MainPage the AppBar1 is shown, on Settings the AppBar2 ish shown and when I go back to MainPage the AppBar1 is shown as expected. There problem is when I am on the Settings Page and reorder items in DataBountListBox and go back. The the AppBar2 is shown on the MainPage.xaml. It definitly should not be there. I tried creating the AppBar1 in code (OnNavigatedTo): the AppBar1 is shown when I return to MainPage but after a while it disappears and the AppBar2 from Settings is shown. What is the problem? It looks like reordering items in DataBountListBox messes up the ApplicationBars.