I've already tried that and just tried again. It's definitely doing it... and again I don't know if this is just a safari issue, but lots of people do use safari if so.
Perhaps, inspecting it you were too careful whereas not to see the issue.
Again, the menu functions properly on the demo 1.5. Once I select 1.6 demo from the side I get the weird result.
If I hold my mouse over "Features" (it opens the submenu) then move my mouse down in one quick movement to "Template Styles", I end up with the image I attached.... the "template styles" submenu overlapping the "user pages" submenu.
Moving slightly slower, submenu's will not open up or one will remain open after I've moved the mouse back to the top. Not if I move the mouse much slower, it works exactly as it should.... just like the 1.5 demo version.
These oddities do not happen at all on the 1.5 demo, regardless of how slow or fast you move the mouse throughout the menu.
I'm kind of bummed... I really want this template but I'm hesitant if I don't see it work right.