If there is no model for a post-type and/or you do not explicitly support the author within a model, the dropdown is missing from the wordpress admin single post-view.
After adding
'supports' => ['author']
to the Model options the dropdown appears again.
Therefore the default should be fixed if there is no model.
If there is no model for a post-type and/or you do not explicitly support the author within a model, the dropdown is missing from the wordpress admin single post-view.
After adding
'supports' => ['author']to the Model options the dropdown appears again.
Therefore the default should be fixed if there is no model.