[Bug Report]Navigation – Hover for subpages is not working

if I have a subpage in my navigation it won’t appear if I hover over the parent page.

You can see the problem here: http://wyvyrias.de/ (hover over the second page in the nav)

Btw I’m not sure if I’m allowed to post my site as example but I think it’s better with an example.

This problem also occurs on the mobile version.

Regards

Wyvyrias