Ticket #29159: 29159.diff

src/wp-includes/general-template.php

@@ -3458 +3458 @@
         global $wp_rich_edit, $is_gecko, $is_opera, $is_safari, $is_chrome, $is_IE, $is_edge;
 
         if ( ! isset( $wp_rich_edit ) ) {
-                $wp_rich_edit = false;
+                // Default to true since most browsers work with TinyMCE and sometimes
+                // the user agent is obscured by proxy servers.
+                $wp_rich_edit = true;
 
                 if ( 'true' === get_user_option( 'rich_editing' ) || ! is_user_logged_in() ) { // Default to 'true' for logged out users.
                         if ( $is_safari ) {