Sub-menus stopped working

[semeano]

Steps:

• go to https://wppb.me
• fill in the fields
• download
• extract the plugin onto the plugins folder
• activate

Issue: Wordpress sub-menus stop working, you can easily check that by hovering your mouse cursor over the menus on the left and see that the sub-menus stopped showing. The same also happens with Product data tabs when editing a product.

Wordpress 4.7.2