DynamicResource color doesn't work for BorderBrush on a Border - Bug?

Question

Visual Studio 2010 | .NET/WPF 4.0

I think this might be a WPF bug, but I can\'t seem to find a bug report about it. To cover the possibility that I\'m just missing s

Answer 1

Another interesting thing is that it does not happen when use a Rectangle instead of a Border.