Bug with top menu

Hi,

Thanks for this great plugin.

There is a strange bug : the top menu often does not display correctly, check this page : https://www.soccermontreal.org/inscriptions/soccer-hiver-montreal/

Sometimes, it works great, but often it does not.

This is a great plugin and I would like to continue to use it.

Thanks,

Chris

The page I need help with: [log in to see the link]