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?
https://www.loom.com/share/a5342356131b451cbde9af8adc871a08?sid=b353db08-0e32-442e-bddf-e6889d7416e5

Here is my site : https://bloom-legal.com
I am bypassing cloudflare for the time being.

Thank you very much for your help,
Joachim