Whenever I attach a DataTemplate to a MenuItem, each generated menu item gets an extra space on the left side. This extra space looks as wide as the space reserved for the check, which I use. Building a menu manually without a DataTemplate doesn't add this extra space. As an extra wrinkle, if I click on this extra space the menu item goes away but no click event is generated. I don't know why it's adding this extra space. Any ideas?

my xaml code couldn't be more simpler:

Menu with the described extra spaces:

<Menu>
    <MenuItem Header="Enemies" ItemsSource="{Binding AvailableEnemyClasses}">
        <MenuItem.ItemTemplate>
            <DataTemplate>
                <MenuItem Header="{Binding}">
                </MenuItem>
            </DataTemplate>
        </MenuItem.ItemTemplate>
    </MenuItem>
</Menu>

Menu without extra spaces:

<Menu>
    <MenuItem Header="Utilities" >
        <MenuItem Header="Enemy01"/>
        <MenuItem Header="Enemy02"/>
        <MenuItem Header="Enemy03"/>
    </MenuItem>
</Menu>
c# wpf menuitem
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