ASP.Net Menu Control.... cannot select item at 4th level

I have this control on a page.  The selections are static.  The "maximumlevels" is set to 6.
When I click on an item at the 4th level, I can see the postback occur but the "click" event doesn't fire!
I'm totally baffeled.  I've tested this in the Page Load event.  At this point the PRIOR menu selected value shows.  On the next menu_click, the previous selection shows.
The first menu item is "selected" and has a value of "Overview".
The fourth level item has a value of "Child".
No matter how many times I selected that item, my check in the Page Load shows the value to be "Overview".
I've tested the 3rd level items and on click, I can see the prior menu item value.  When I click a 4th level item, the value never changes from the last 3rd level or higher item selected.
I'm at a loss
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