I'm currently using this Backend theme for our Odoo 13 app - \https://apps.odoo.com/apps/themes/13.0/backend_theme_v13/#loempia-comments

There is a bug in this theme and I don't know where to post about it, and I'm posting here in case someone else has faced it before.

In the mobile view, the top menu items collapse into a hamburger menu. When you click on the hamburger menu icon once, and user clicks on a menu item, instead of collapsing the menu, the code sets 'display: none' to the menu. This looks fine at first glance, but when you click on it the second time, it doesn't do anything because 'display: none' is still active. 

This is a bug in our current implementation that we don't want to push to production. Any help would be greatly appreciated.