There were two Xaml files that were almost identical and had the class names and file names reversed, this meant that when you opened the menu item for FabTabGallery the content was actually in AccentTabGallery.xaml. AccentTabGallery.xaml did not have a code behind.
Deleted FabTabGallery.xaml and Renamed AccentTabGalley.xaml to FabTabGallery.xaml to bring everything into line.
There were two Xaml files that were almost identical and had the class names and file names reversed, this meant that when you opened the menu item for FabTabGallery the content was actually in AccentTabGallery.xaml. AccentTabGallery.xaml did not have a code behind.
Deleted FabTabGallery.xaml and Renamed AccentTabGalley.xaml to FabTabGallery.xaml to bring everything into line.
Fixes #2