Showhide not working lately

Dear Developer,

Thank you for the fine plugin !

Showhide was working for a few days, and then without any change, the links have been staying open always, even though the hover colour change happens as desired.

See the page :

http://www.lilafoundation.in/projects-and-activities/lila-prism/lila-prism-lectures-series-2016/

What may be the issue ?

Thanks,

Samuel

https://wordpress.org/plugins/wp-showhide/