Sorry my bad I corrected my code and it works fine

Sorry

You are right on a clean machine it works.

My dev machine must have RC items, although I think the version of the assembly is the same. I will try Clean Solution and rebuild then

One more question when I am using StackMode=GridStyla if text is too long on StackItem it does not appearear. How can I change this to either wrap text or resize grid width to show it

Any chance that RTM build did not remove old components how can I check.

What are the RTM version on assemblies so I can check my peroject

Well there is no such a property on UXDockButton neither on UXDock.

The only one I can find is StackTotalDisplayItems but when I set it to 0 if I do it from Property Grid, VS crashes if I set it from XAML it never displays anything.

Thanks for such a quick response, maybe you didn't expose this property?

Well unfortunately this has not being fixed on the RTM build