"More" button not working on mobile

Hi,
Thanks for the plugin. It works very well on computer, however when on mobile the “More” button doesn’t work as intended. It shows vertically every tabs that can’t be displayed on screen and it can’t be reduced. The reader then can’t read the content properly.

See here : http://i.imgur.com/XQVed8L.png

It’s even worse when there is more tabs.

https://wordpress.org/plugins/easy-responsive-tabs/