diff --git a/src/wp-admin/css/common.css b/src/wp-admin/css/common.css
index 28b881d363..b317af45e0 100644
--- a/src/wp-admin/css/common.css
+++ b/src/wp-admin/css/common.css
@@ -2281,7 +2281,7 @@ html.wp-toolbar {
 	line-height: 1;
 }
 
-.postbox.closed {
+.postbox.closed .postbox-header {
 	border-bottom: 0;
 }
 
diff --git a/src/wp-admin/includes/class-wp-site-health.php b/src/wp-admin/includes/class-wp-site-health.php
index f10f0b2980..17ebd8a1c0 100644
--- a/src/wp-admin/includes/class-wp-site-health.php
+++ b/src/wp-admin/includes/class-wp-site-health.php
@@ -1357,7 +1357,7 @@ class WP_Site_Health {
 			$result['description'] .= sprintf(
 				'<p>%s</p>',
 				sprintf(
-					'<span class="error dashicons"><span class="screen-reader-text">%s</span></span> %s',
+					'<span class="dashicons error"><span class="screen-reader-text">%s</span></span> %s',
 					/* translators: Hidden accessibility text. */
 					__( 'Error' ),
 					sprintf(
diff --git a/tests/phpunit/tests/rest-api/rest-server.php b/tests/phpunit/tests/rest-api/rest-server.php
index 440effe4fe..57b7bbb38a 100644
--- a/tests/phpunit/tests/rest-api/rest-server.php
+++ b/tests/phpunit/tests/rest-api/rest-server.php
@@ -151,6 +151,21 @@ class Tests_REST_Server extends WP_Test_REST_TestCase {
 		$this->assertSame( $headers, $enveloped['headers'] );
 	}
 
+	/**
+	 * Data provider.
+	 *
+	 * @return array
+	 */
+	public function data_envelope_params() {
+		return array(
+			array( '1' ),
+			array( 'true' ),
+			array( false ),
+			array( 'alternate' ),
+			array( array( 'alternate' ) ),
+		);
+	}
+
 	public function test_default_param() {
 
 		register_rest_route(
@@ -1721,6 +1736,32 @@ class Tests_REST_Server extends WP_Test_REST_TestCase {
 		$this->assertArrayNotHasKey( 'X-WP-Nonce', $headers );
 	}
 
+	/**
+	 * Helper to setup a users and auth cookie global for the
+	 * rest_send_refreshed_nonce related tests.
+	 */
+	protected function helper_setup_user_for_rest_send_refreshed_nonce_tests() {
+		$author = self::factory()->user->create( array( 'role' => 'author' ) );
+		wp_set_current_user( $author );
+
+		global $wp_rest_auth_cookie;
+
+		$wp_rest_auth_cookie = true;
+	}
+
+	/**
+	 * Helper to make the request and get the headers for the
+	 * rest_send_refreshed_nonce related tests.
+	 *
+	 * @return array
+	 */
+	protected function helper_make_request_and_return_headers_for_rest_send_refreshed_nonce_tests() {
+		$request = new WP_REST_Request( 'GET', '/', array() );
+		$result  = rest_get_server()->serve_request( '/' );
+
+		return rest_get_server()->sent_headers;
+	}
+
 	/**
 	 * Refreshed nonce should be present in header when a valid nonce is
 	 * passed for logged in/anonymous user and not present when nonce is not
@@ -1751,6 +1792,23 @@ class Tests_REST_Server extends WP_Test_REST_TestCase {
 		}
 	}
 
+	/**
+	 * @return array {
+	 *     @type array {
+	 *         @type bool $has_logged_in_user Are we registering a user for the test.
+	 *         @type bool $has_nonce          Is the nonce passed.
+	 *     }
+	 * }
+	 */
+	public function data_rest_send_refreshed_nonce() {
+		return array(
+			array( true, true ),
+			array( true, false ),
+			array( false, true ),
+			array( false, false ),
+		);
+	}
+
 	/**
 	 * Make sure that a sanitization that transforms the argument type will not
 	 * cause the validation to fail.
@@ -1790,6 +1848,22 @@ class Tests_REST_Server extends WP_Test_REST_TestCase {
 		$this->assertSame( 200, $response->get_status() );
 	}
 
+	public function _validate_as_integer_123( $value, $request, $key ) {
+		if ( ! is_int( $value ) ) {
+			return new WP_Error( 'some-error', 'This is not valid!' );
+		}
+
+		return true;
+	}
+
+	public function _validate_as_string_foo( $value, $request, $key ) {
+		if ( ! is_string( $value ) ) {
+			return new WP_Error( 'some-error', 'This is not valid!' );
+		}
+
+		return true;
+	}
+
 	/**
 	 * @ticket 43691
 	 */
@@ -2637,78 +2711,4 @@ class Tests_REST_Server extends WP_Test_REST_TestCase {
 		$this->assertArrayHasKey( 'allow', $link['targetHints'] );
 		$this->assertSame( array( 'GET', 'PUT' ), $link['targetHints']['allow'] );
 	}
-
-	public function _validate_as_integer_123( $value, $request, $key ) {
-		if ( ! is_int( $value ) ) {
-			return new WP_Error( 'some-error', 'This is not valid!' );
-		}
-
-		return true;
-	}
-
-	public function _validate_as_string_foo( $value, $request, $key ) {
-		if ( ! is_string( $value ) ) {
-			return new WP_Error( 'some-error', 'This is not valid!' );
-		}
-
-		return true;
-	}
-
-	/**
-	 * @return array {
-	 *     @type array {
-	 *         @type bool $has_logged_in_user Are we registering a user for the test.
-	 *         @type bool $has_nonce          Is the nonce passed.
-	 *     }
-	 * }
-	 */
-	public function data_rest_send_refreshed_nonce() {
-		return array(
-			array( true, true ),
-			array( true, false ),
-			array( false, true ),
-			array( false, false ),
-		);
-	}
-
-	/**
-	 * Helper to setup a users and auth cookie global for the
-	 * rest_send_refreshed_nonce related tests.
-	 */
-	protected function helper_setup_user_for_rest_send_refreshed_nonce_tests() {
-		$author = self::factory()->user->create( array( 'role' => 'author' ) );
-		wp_set_current_user( $author );
-
-		global $wp_rest_auth_cookie;
-
-		$wp_rest_auth_cookie = true;
-	}
-
-	/**
-	 * Helper to make the request and get the headers for the
-	 * rest_send_refreshed_nonce related tests.
-	 *
-	 * @return array
-	 */
-	protected function helper_make_request_and_return_headers_for_rest_send_refreshed_nonce_tests() {
-		$request = new WP_REST_Request( 'GET', '/', array() );
-		$result  = rest_get_server()->serve_request( '/' );
-
-		return rest_get_server()->sent_headers;
-	}
-
-	/**
-	 * Data provider.
-	 *
-	 * @return array
-	 */
-	public function data_envelope_params() {
-		return array(
-			array( '1' ),
-			array( 'true' ),
-			array( false ),
-			array( 'alternate' ),
-			array( array( 'alternate' ) ),
-		);
-	}
 }