WP 5.8 comes with a new system to manage events named "Widgets Block Editor". How can I disable this new system and restore the classic widget editor of WordPress?
To disable the new WordPress widget editor system you can use one of following methods.
1. Install and Activate the Disable Widget Block Editor plugin.
2. Use use_widgets_block_editor
filter to disable it. You can place following code in your theme functions.php file or your plugin.
add_filter( 'use_widgets_block_editor', '__return_false' );
3. Use following code in functions.php of your theme to declare that your theme doesn't support the new widget editor system.
remove_theme_support( 'widgets-block-editor' )