Please delete this code:
.login-link:hover > .menu-main-container:not(.active) { opacity: 0; visibility: hidden; } .login-link > .menu-main-container.active { opacity: 1; visibility: visible; }
from style.css of your child theme. Looks like this http://prntscr.com/mhbdts is not the best fix. I will ask our developers and let you know a new solution soon.
Regards
