I need to have a category / sub-category selection component (mega menu).

I looked through numerous examples and also found an adequate implementation example, downloaded it, ran and saw it has the same issue as me.

So I've come up with this example to ask for help from community: stackblitz

This example contains two menus. First one is static and everything works fine. The second one is built using recursion and what is not working there is:

• Hover on menu item does not open it
• Menu items do not hide if you hover over other category or click on other categories

I would be very happy to know why is that, but I suspect this is a bug in @angular/material.