Since the last update (6.1.6) the navigation for “sub menu” is broken from mobile phones (or any touch device):
When you clic on the menu item with sub-items it links to the page corresponding to that item, it does not open the sub menu (regardless the option “Sub menu trigger” is “Anchor” or “Sub indicator”), so you can not open it to see the sub items.
I found that:
(remember this happens only in touch devices)
If you drag a little bit in the “sub indicator” (the trigger) then yes, it opens the sub menu.
But I understand it’s not the desired behaviour. It was ok like always, clicking on the trigger, just like before this last update.