La fonction de suggestion automatique permet d'affiner rapidement votre recherche en suggérant des correspondances possibles au fur et à mesure de la frappe.
I tested it on my end and I couldn't reproduce until I did - and I realized it was once i was accepting the cookies from the cookie banner. I reproduced again in incognito: Before accepting the cookies > I see the whole form; and once I accept the cookies, and click again to see the form I see only the GDPR text.
Not sure what exactly is the issue here and if the threads you found would help.