Prestashop 1.7.6 back office issue

Since an update on my prestashop, my prestashop backoffice has huge bug. I cannot edit product datasheet. I am looking for someone to fix the backoffice buggs. Basically product datasheet load into one signle form with no tabs, and whole combo are printed with no possible selection, not saving the sheet.

rest of site and backoffice seems to be working juts fine