Cannot enter text into the CommandParameter field of the Properties Editor for a button

Hi,

I've just installed VS2012 and noticed that the Properties Editor in the WPF Designer behaves a bit differently to the VS2010 version. One thing I was curious about is that I can't enter text into the CommandParameter field for a button control. I was able to do this in VS2010.

If I add the CommandParameter tag into the Xaml (e.g. CommandParameter = "ABCD") then I am able update this text in the CommandParameter field of the Properties Editor. Not sure if this is working as designed or whether it's a bug.

Any thoughts would be appreciated.

JP.