Found a few things, let’s investigate further, can you tell me, in your project. :
- Do you want/need to have several different master pages ?
- Which one is the real master page according to you (knowing that index.html is defined as the main master page in the project settings)
- Are you aware that almost all the pages are defined as specific master pages (the case where one want to have several different headers & footers in a project for example).
UPDATE
Oh, I found something interesting in your project!
The concept of Master pages in WordPress is completely different from that of components. We actually mention in the documentation that you shouldn’t mix the two, kind of like getting a gremlin wet after midnight.
So, in a WordPress project, we can use components BUT when we want to use master pages, we use the dedicated WordPress feature.
So, first off, to start fresh and avoid any potential issues, you’ll need to make significant changes to the project to remove ALL traces of using project master pages and focus on WordPress master pages.