Ticket #22720: 22720.2.diff

wp-includes/js/media-editor.js

@@ -401 +401 @@
                                         var display = state.display( attachment ).toJSON();
                                         return this.send.attachment( display, attachment.toJSON() );
                                 }, this ) ).done( function() {
-                                        wp.media.editor.insert( _.toArray( arguments ).join('') );
+                                        wp.media.editor.insert( _.toArray( arguments ).join("\n\n") );
                                 });
                         }, this );