Hello,
You should add the following code to custom.css file (how to create this file you can watch here):
.fixed-header .menu > li > a:hover:after, .main-nav .menu > li > a:hover:after{
content: "";
position: absolute;
width: 100%;
height: 80px;
bottom: -55px;
left: 0;
}
Soon we’ll fix this in our update.
Regards,
Eva Kemp.