Footer hidden - Need to reload page once to see it

I had an issue with a client site: The footer is hidden on the first load of the page. Need to reload it to make it appear. There is no animation on that page, or vertical hight. Just a bit of custom code for social network icons. I don’t see the issue there…

Could you please help?
Thank you in advance

Blog page where the bug appears: Coworking, télétravail et quête d'équilibre : comment évoluent nos modes de vie ?

Read-only: Webflow - Harvey 2022

Here is my site Read-Only: LINK
(how to share your site Read-Only link)