Non Logged Navigation is messed up

Hi, I am using a theme called Food And Cook from http://dahz.daffyhazan.com/food-cook/. Groups is set up as well, the issue is the menu has dropdown and when the user is not logged in, the dropdown menu is messed up.

I did disable all the plugins, groups is causing the issue.

Not sure where to look or how to fix it, please help. Thanks!

https://wordpress.org/plugins/groups/