Normal Steps to Reproduce
https://zkfiddle.org/sample/3atuosg/1-menubar-autodrop-closing-unexpectedly
hover in sequence (without clicking, never leaving any menu element with the mouse)
"menu 1" -> "menuitem 1" -> "menu 3"
"menu 1" -> "menu 2" -> "menuitem 4" -> "menuitem 5" -> "menuitem 7"
Current Result
the menubar automatically closed when switching from a submenu to a parent level (except the direct ancestor)
Expected Result
the currently hovered menus remain open -> only unrelated (no ancestor and not direct child of the currently hovered node) menupopups close
Debug Information
still works in ZK 6.5.8.1
