Since a couple of days, I've seen that if I go to create new subsite on my SharePoint Online tenant , I don't have the option to create a Team Site with the modern experience template.
https://mytenant.sharepoint.com/_layouts/15/newsbweb.aspx
I just see the option to create a Team site with the classic experience. I've tried in 3 diferent tenants, and is the same on all of them.
Did I miss something? Do I need to activate any feature?