Tabs don't work any more since WP 4.1

Hello there,

The tabs don’t work any more since we’ve updated our site (which is fortunately still under construction). All the texts are showing on the first tab and nothing happens if you click on other tabs. It used to work smoothly before.

The link to a page of our site showing the problem: https://new.troublesdapprentissage.com/?page_id=119

Thanks for your help,

PS: by the way, shortcodes ultimates is a wonderful tool!

https://www.ads-software.com/plugins/shortcodes-ultimate/