WPF XAML designer showing bound property names instead of property values

Question

One of my XAML files shows a strange behaviour in the XAML designer (but not during runtime):

public class MyDesignTimeViewModel
{

    public MyDesignTimeVi         


        

Answer 1

To echo J.G.'s answer, the fix was to enable project code in the XAML designer which had mysteriously been disabled at some point.

New account so I can't vote or comment, I just didn't like seeing a correct answer downvoted.