XAML Context Menu not closing - xaml

Question

I've got a "popup" context menu on a list box, and there are two behaviors that would seem "out-of-the-box" but I am having a tough time getting the XAML ContextMenu to behave the way I would expect...
One is that, when I pick a sub-menu (e.g. "One" or "Two"), the initial menu continues to stay open (e.g. "Menu" does not go away once I've made a selection).
Second is that the menu margins seem odd. Left justifying Horizontally does not seem to make the main menu (e.g. "Menu") left justify... I can work around this by tweaking the margin - but thats painful for dynamic text..
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
<StackPanel>
<ListView>
<ListView.ContextMenu>
<!-- StaysOpen="False" -->
<ContextMenu>
<!-- Background="Transparent" Margin="-8,0,-8,0" -->
<Menu>
<!-- StaysOpenOnClick="False" -->
<MenuItem Header="Menu">
<MenuItem Header="One" />
<MenuItem Header="Two" />
</MenuItem>
</Menu>
</ContextMenu>
</ListView.ContextMenu>
<ListViewItem Content="Red" />
<ListViewItem Content="Orange" />
<ListViewItem Content="Black" />
<ListViewItem Content="Blue" />
<ListViewItem Content="Green" />
</ListView>
</StackPanel>
</Page>
Any thoughts on how to make the Main menu of this popup behave?
Thanks in advance,
T

Answer 1

Try this:
<ContextMenu>
<MenuItem Header="Menu">
<MenuItem Header="One" />
<MenuItem Header="Two" />
</MenuItem>
</ContextMenu>
you are not supposed to have a menu inside a context menu.
you should put menuitem directly.