Ticket #19926: 19926.0.patch

wp-includes/class-wp-editor.php

@@ -303 +303 @@
                                         'gecko_spellcheck' => true,
                                         'fix_list_elements' => true,
                                         'keep_styles' => false,
-                                        'entities' => '38,amp,60,lt,62,gt',
+                                        'entities' => '160,nbsp,38,amp,60,lt,62,gt',
+                                        'entity_encoding' => 'named',
                                         'accessibility_focus' => true,
                                         'tabfocus_elements' => 'title,publish',
                                         'media_strict' => false,