Once my site upgraded to the latest version, I can’t edit/add the page or post anymore, look like the new editor – Gutenberg has trouble with my other plugins. How can I disabled Gutenberg editor for WordPress 5.0
If you would like to disable new editor – Gutenberg for WordPress 5.0, there are 3 options
Option 1 - Install The Classic Editor WordPress Plugin
You can install the Classic Editor WordPres – Plugin Home. Once install the plugin, you can switch the editor between Gutenberg and TinyMCE
Option 2 - Install WordPress Plugin "Disable Gutenberg"
There is another WordPress plugin you can use to disable WordPress 5.0 new editor. Disable Gutenberg which is the similar plugin as “Class Editor” which is allowing you to remove Gutenberg editor complete and even “Gutenberg admin notice”
Option 3 - Disable Gutenberg editor via Code
You can place following codes within your function.php page. For the version newer than WordPress 5.0 beta
add_filter('use_block_editor_for_post_type', '__return_false', 100);For other verionsadd_filter('gutenberg_can_edit_post_type', '__return_false');To disable Gutenberg for Meta BoxesWhen adding the meta box, we can pass argument to disable Gutenberg editor.
add_meta_box('metabox_id', 'Metabox Name', 'metabox_callback', null, 'advanced', 'default', array('__block_editor_compatible_meta_box' => false));