Double Page Title

Hello,

first of all I wanna say that this is a great theme! I really like it.

I created a subtheme as described in the documentation. Everything works except one thing. After adding the page title block to the page title region I see the page title twice. Once in the page title region and once in the content region. (See image.) This applies to all entities, node, user, taxonomy. That means that the page title in the content region is not disabled, as it should.

It works, of course, with the main theme and with the included subtheme, but not with the subtheme I created. The difference between my subtheme and the included subtheme is that my subtheme is located in the theme folder, not in a subfolder within the Drupal W3CSS Theme. But, as I said before, everything else works as it should.

I think all I need is just the right hint. :-)
I'm using Drupal 9.1.4.

Kind regards,
Reiner