After applying some security upgrades and updating several modules I realized that my menus look differently. And sub items are no longer visible/accessible.
I didn't even notice when it happened.
They used to look like this:
and now they look like this:
As you can see from the following screenshot, all the 'children' are there, but why they disappeared from the menu?
What settings should I check? Please advise.
I will greatly appreciate any help.