Problem:

https://dl.dropboxusercontent.com/u/32880842/etc5/nevertheless-ie-bug.jpg

Cause:

unknown (yet). probably menu item padding or menu min height CSS.

Possible Fix:

Apply margin: -1px; to menu container. (suggested by Tom)
seem fix the issue with minor/no consequences to other css rule.

Reported by:

Tom Parkison (http://www.toms-world.org) Thu, Jul 28, 2016 at 9:03 AM via Genbu Media Support Email.