Default Blog Template isn't working if Templates are shown as showcase on a template

Hey guys,

i am about to switch from one standard "New Blog Template" to let users choose that one they like. So i implemented a few on a custom Tempalte. Selecting these templates and signing up for a new site is just working fine.

But if someone registers to the site without making a choice for a tempalte, the default template isn't working for me.

Hope somebody could help me :slight_smile:
Best wishes,
David