Padding on WrapPanels not working properly

I’m not sure if this is a bug or a feature.

When using a padding on a WrapPanel, the content seems to ignore the padding. As you can see from this example

Both the WrapPanel and the Stack one have the same padding.

      <WrapPanel Padding="20" Background="#333" Margin="10">
          <Text Value="WrapPanel" FontSize="23" Background="#ddd" />
      <StackPanel Padding="20" Background="#333" Margin="10" Alignment="Default" >
          <Text Value="StackPanel" FontSize="23" Background="#ddd" />

This does just look like a defect on WrapPanel. I’ll file an issue and try to get that fixed.