Ticket #31373: 31373-empty-fix.diff

src/wp-admin/includes/class-wp-press-this.php

@@ -640 +640 @@
                                                 $key = $this->_limit_string( wp_unslash( $key ) );
 
                                                 // Sanity check. $key is usually things like 'title', 'description', 'keywords', etc.
-                                                if ( empty( $key ) || strlen( $key ) > 100 ) {
+                                                if ( ( empty( $key ) && 0 != $key ) || strlen( $key ) > 100 ) {
                                                         continue;
                                                 }