Native Observability 2.0.1 Patch release on 2.0.0. The ajax_correlation library attached a JS file that used jQuery without declaring core/jquery, so on every page where no other library pulled jQuery in first the file threw on load, the behavior never registered, and no AJAX request carried the parent request id back to the server. Admin pages load jQuery for unrelated reasons, which is why the defect only showed on the front end. The file no longer uses jQuery. Drupal AJAX runs on XMLHttpRequest, so the behavior wraps open/send and fetch directly. That reaches the same calls without adding 78748 bytes of jQuery to every front-end page, and the wrappers attach the header only to same-origin requests, so the request id no longer travels to third-party endpoints. UPGRADE NOTES - Nothing to do. No update hook, no configuration change, no interface change.