diff --git a/wp-includes/class-wp-customize-manager.php b/wp-includes/class-wp-customize-manager.php
index ce325118f5..9d55fb23ac 100644
--- a/wp-includes/class-wp-customize-manager.php
+++ b/wp-includes/class-wp-customize-manager.php
@@ -889,7 +889,7 @@ final class WP_Customize_Manager {
 	 * @return bool
 	 */
 	public function is_theme_active() {
-		return $this->get_stylesheet() == $this->original_stylesheet;
+		return $this->get_stylesheet() === $this->original_stylesheet;
 	}
 
 	/**
@@ -5856,8 +5856,8 @@ final class WP_Customize_Manager {
 				$theme->id            = $theme->slug;
 				$theme->screenshot    = array( $theme->screenshot_url );
 				$theme->authorAndUri  = wp_kses( $theme->author['display_name'], $themes_allowedtags );
-				$theme->compatibleWP  = is_wp_version_compatible( $theme->requires );
-				$theme->compatiblePHP = is_php_version_compatible( $theme->requires_php );
+				$theme->compatibleWP  = is_wp_version_compatible( $theme->requires ); // phpcs:ignore WordPress.NamingConventions.ValidVariableName
+				$theme->compatiblePHP = is_php_version_compatible( $theme->requires_php ); // phpcs:ignore WordPress.NamingConventions.ValidVariableName
 
 				if ( isset( $theme->parent ) ) {
 					$theme->parent = $theme->parent['slug'];
diff --git a/wp-includes/version.php b/wp-includes/version.php
index ba14ea4d76..a54d967be5 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47820';
+$wp_version = '5.5-alpha-47821';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.