Ticket #58565: 58565.diff

src/wp-content/themes/twentyfifteen/css/editor-blocks.css

@@ -670 +670 @@
 /* Pullquote */
 
 .wp-block-pullquote,
-.editor-block-list__block .wp-block-pullquote blockquote {
+.editor-styles-wrapper .wp-block-pullquote blockquote {
         border: 0;
         margin: 0;
         padding-left: 0;