I have an issue with the current build where the main navbar has got two top level menu items which have sub menu items. I have also set Show Sub Menu Items to No

When you click on the first item with a submenu as expected a dropdown appears and you can access the items.
What also happens is the second item with submenu's also shows the dropdown view but you can't select it or any submenu items.

Any hints on trying to debug the issue? or if it is a known limitation.

Regards,
Dave