WordPress.com Block Editor: do not use in the upcoming Block-based Wi…

…dgets Editor (#20358)

Fixes #20357

Since the WordPress.com Block editor relies on wp-editor, and since that dependency cannot be used in the widget editor (see https://core.trac.wordpress.org/changeset/51393 ), let's not load the WordPress.com editor scripts in the widget editor.

projects/plugins/jetpack/changelog/fix-widget-wpcom-block-editor

@@ -0,0 +1,4 @@
+Significance: patch
+Type: bugfix
+
+WordPress.com Block Editor: do not use in the upcoming Block-based Widgets Editor

projects/plugins/jetpack/modules/wpcom-block-editor/class-jetpack-wpcom-block-editor.php

@@ -304,6 +304,13 @@ public function filter_salt( $salt, $scheme ) {
 	 * Enqueues the WordPress.com block editor integration assets for the editor.
 	 */
 	public function enqueue_block_editor_assets() {
+		global $pagenow;
+
+		// Bail if we're not in the post editor, but on the widget settings screen.
+		if ( is_customize_preview() || 'widgets.php' === $pagenow ) {
+			return;
+		}
+
 		$debug   = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG;
 		$version = gmdate( 'Ymd' );