diff --git a/src/wp-admin/edit-form-blocks.php b/src/wp-admin/edit-form-blocks.php
index 30b5b2d64e..1e46900093 100644
--- a/src/wp-admin/edit-form-blocks.php
+++ b/src/wp-admin/edit-form-blocks.php
@@ -325,6 +325,7 @@ wp_enqueue_media(
 		'post' => $post->ID,
 	)
 );
+wp_tinymce_inline_scripts();
 wp_enqueue_editor();
 
 /**
diff --git a/src/wp-includes/script-loader.php b/src/wp-includes/script-loader.php
index 6cf83b6f9c..0736858041 100644
--- a/src/wp-includes/script-loader.php
+++ b/src/wp-includes/script-loader.php
@@ -484,8 +484,18 @@ function wp_default_packages_inline_scripts( &$scripts ) {
 		'window.wp.oldEditor = window.wp.editor;',
 		'after'
 	);
+}
+
+/**
+ * Adds inline scripts required for the TinyMCE in the block editor.
+ *
+ * @since 5.0.0
+ *
+ * @global WP_Scripts $wp_scripts
+ */
+function wp_tinymce_inline_scripts() {
+	global $wp_scripts;
 
-	// TinyMCE init.
 	$tinymce_plugins = array(
 		'charmap',
 		'colorpicker',
@@ -596,7 +606,7 @@ function wp_default_packages_inline_scripts( &$scripts ) {
 		}
 	}';
 
-	$scripts->add_inline_script( 'wp-block-library', $script, 'before' );
+	$wp_scripts->add_inline_script( 'wp-block-library', $script, 'before' );
 }
 
 /**