ADVMainMenu RadioItems and AutoCheck

When defining two or more MenuItems as RadioItems and AutoCheck to True you can click the "checked" item and cause it to be "unchecked" which leaves none of the MenuItems "checked". Shouldn't at least one radio item always be "checked" in this scenario? I was expecting the use of the radioitems/autocheck together to handle this without having to set checked to True myself. Everything works as expected as long as you don't click on the already "checked" MenuItem. Is this by design or a bug?

I forgot to mention, I'm using version

This is the behavior by design. You will see the same behavior with the standard VCL TMainMenu.