diff --git src/wp-includes/widgets/class-wp-widget-text.php src/wp-includes/widgets/class-wp-widget-text.php
index e6d979347d..f08b908fce 100644
--- src/wp-includes/widgets/class-wp-widget-text.php
+++ src/wp-includes/widgets/class-wp-widget-text.php
@@ -116,8 +116,8 @@ class WP_Widget_Text extends WP_Widget {
}
$doc = new DOMDocument();
- $doc->loadHTML( sprintf(
- '%s',
+ @$doc->loadHTML( sprintf(
+ ' %s',
esc_attr( get_bloginfo( 'charset' ) ),
$instance['text']
) );
diff --git tests/phpunit/tests/widgets/text-widget.php tests/phpunit/tests/widgets/text-widget.php
index 6c7ec1f102..9bc6edcad4 100644
--- tests/phpunit/tests/widgets/text-widget.php
+++ tests/phpunit/tests/widgets/text-widget.php
@@ -397,6 +397,7 @@ class Test_WP_Widget_Text extends WP_UnitTestCase {
// Check text examples that will not migrate to TinyMCE.
$legacy_text_examples = array(
'',
+ 'Quote
',
'',
"\n- List Item 1
\n- List Item 2
\n
",
'',