Ticket #27673: 27673.patch

src/wp-admin/edit-form-advanced.php

@@ -26 +26 @@
 
 $media_support = theme_supports_thumbnails( $post ) || post_supports_thumbnails( $post );
 
-if ( post_type_supports( $post_type, 'editor' ) || post_type_supports( $post_type, 'thumbnail' ) || $media_support ) {
+if ( post_type_supports( $post_type, 'editor' ) || $media_support ) {
         add_thickbox();
         wp_enqueue_media( array( 'post' => $post_ID ) );
 }
@@ -169 +169 @@
 if ( post_type_supports($post_type, 'page-attributes') )
         add_meta_box('pageparentdiv', 'page' == $post_type ? __('Page Attributes') : __('Attributes'), 'page_attributes_meta_box', null, 'side', 'core');
 
-if ( current_theme_supports( 'post-thumbnails', $post_type ) || post_supports_thumbnails( $post ) )
+if ( $media_support )
         add_meta_box('postimagediv', __('Featured Image'), 'post_thumbnail_meta_box', null, 'side', 'low');
 
 if ( post_type_supports($post_type, 'excerpt') )

src/wp-includes/media.php

@@ -2774 +2774 @@
                         return post_type_supports( 'attachment:audio', 'thumbnail' );
                 } elseif ( 0 === strpos( $post->post_mime_type, 'video' ) ) {
                         return post_type_supports( 'attachment:video', 'thumbnail' );
+                } elseif ( 0 === strpos( $post->post_mime_type, 'image' ) ) {
+                        return false;
                 }
         }
 
@@ -2795 +2797 @@
                         return current_theme_supports( 'post-thumbnails', 'attachment:audio' );
                 } elseif ( 0 === strpos( $post->post_mime_type, 'video' ) ) {
                         return current_theme_supports( 'post-thumbnails', 'attachment:video' );
+                } elseif ( 0 === strpos( $post->post_mime_type, 'image' ) ) {
+                        return false;
                 }
         }