The actual problem here is that the ApplicationCommands are working with Input elements (as TextBoxes) if they are in different FocusScope from the Button that holds the Command. The WPF toolbar is different focus scope while our RadToolBar is not.
You can easily make like follows:
I'll also make it by default in the default stlye, because the RadToolbar must be in different FocusScope as well.
Hope this will help you.
All the best,
the Telerik team
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