Wp Cap upload_files dependents on WordPress uses edit_plugins capability

I found some issues with the upload_files capability.

A Basic Example
The artist role can upload media. So I wrote the following code.

add_role('artist', 'Artist', array(
    'upload_files ' => true,
    'delete_posts' => true,
    'delete_published_posts' => true,
    'edit_posts' => true,
    'edit_published_posts' => true,
    'publish_posts' => true,
    'read' => true,
));

Everything works great, however when you go to edit media you cant.