Ticket #36637: 36637.patch

src/wp-includes/js/tinymce/plugins/wplink/plugin.js

@@ -488 +488 @@
                                 edit = $linkNode.attr( 'data-wplink-edit' );
 
                                 if ( href === '_wp_link_placeholder' || edit ) {
-                                        if ( edit && ! inputInstance.getURL() ) {
+                                        if ( href !== '_wp_link_placeholder' && ! inputInstance.getURL() ) {
                                                 inputInstance.setURL( href );
                                         }