Ticket #30240: 30240.2.patch

wp-admin/includes/class-wp-ms-themes-list-table.php

@@ -573 +573 @@
                                 __( 'Visit Theme Site' )
                         );
                 }
+
+                if ( $theme->parent() ) {
+                        $theme_meta[] = sprintf( __( 'Child theme of %s' ), '<strong>' . $theme->parent()->display( 'Name' ) . '</strong>' );
+                }
+
                 /**
                  * Filters the array of row meta for each theme in the Multisite themes
                  * list table.