diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index 335a7cbc37..1231ce44c2 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -500,6 +500,9 @@ function wpautop( $pee, $br = true ) {
 	// Add a double line break below block-level closing tags.
 	$pee = preg_replace( '!(</' . $allblocks . '>)!', "$1\n\n", $pee );
 
+	// Add a double line break after hr tags, which are self closing.
+	$pee = preg_replace( '!(<hr\s*?/?>)!', "$1\n\n", $pee );
+
 	// Standardize newline characters to "\n".
 	$pee = str_replace( array( "\r\n", "\r" ), "\n", $pee );
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 801b0fab0b..04e8a4c5e4 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45573';
+$wp_version = '5.3-alpha-45574';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.