Hi, when I databind the Header property of a RibbonTabItem to an object of a custom type, then it seems the data template for this type will only be applied if I explicitely set the HeaderTemplate property. This does not correspond with classic WPF controls, which also support implicit data templating. I have added a sample project that illustrates this by comparing the XamRibbon to a classic WPF TabControl. Results should be similar, but the Ribbon does not show the first tab correctly.

I would prefer to use implicit data templates, because then I would not need to know the type of the Header property, which makes it all the easier to work with.

Regards, Stefan