Ticket #45465: 45465.patch

src/wp-includes/l10n.php

@@ -889 +889 @@
         global $wp_scripts;
 
         $path   = untrailingslashit( $path );
-        $locale = is_admin() ? get_locale() : get_user_locale();
+        $locale = determine_locale();
 
         // If a path was given and the handle file exists simply return it.
         $file_base       = $domain === 'default' ? $locale : $domain . '-' . $locale;