Ok...
BUG1: in the contact form, with the new feature of privacy, field appears but modal window doesn't open. (if you have a temporary solution, please, share it!)
BUG2: the update tab in the template backend doesn't work
BUG3: it's not really a bug, but today it could be considered a bug. When you set analytics for the site, there's no option to anonymize. So, in the source code, you can see that there's no anonymization of the analytics. It would be a great thing to consider adding this feature.
If I find other bugs, I'll write here.