Ticket #40972: 40972.0.diff

src/wp-includes/class-wp-editor.php

@@ -825 +825 @@
                 $settings['wpautop'] = false;
                 $settings['indent'] = true;
                 $settings['elementpath'] = false;
+                $settings['directionality'] = is_rtl() ? 'rtl' : 'ltr';
 
                 // In production all plugins are loaded (they are in wp-editor.js.gz)
                 // but only these will be initialized by default.