When I click on the “collaborate” button, the page is going up and don’t follow the right ID page section. I check and no element have the same ID at the top of the page.
I may not be reading your question right, but could you clarify what your issue is? I have gone to mobile view and click on “collaborer” and it shows a dropdown of content.
Since I am unable to compare changes on a live site, my only guess would be that the container you are using for the content is not a sibling of the main div for that option. Plus the id was not connected to the button as well.
Make sure that the button you are using is connected to the right container ID in the menu dropdown. The one in your preview link was/is connected to ‘part’.