Activating CDN seems to break my menu

Hello everyone,

I’m on webflow.
I have rebuilt my menu a few times not understanding what was breaking.

It would work once rebuilt, and if I wait a few hours it does not work anymore.
Now I realize that if I activate development mode in Cloudflare, it works.

How can I troubleshoot the source of the issue?

Here is my site :
I am bypassing cloudflare for the time being.

Thank you very much for your help,