Essentially, when you create a new template there is an issue of the right panel structure not displaying as it should in earlier versions.
The structure is to be able the elements in an hierarachy.
If you click on the icons on the page itself to create a section or container, etc, the structure doesn’t appear.
If you click on the elements (left panel) to create a section or container, etc, the structure appears.
See this: Screen Recording 2023-06-27...