Journey and task assigned notifications aren't generated if Journey is assigned using HDL

We have Pre-boarding Journeys configured for Pending Workers to complete tasks.

We use a third party application for Recruiting and once the offer letter is accepted, the person is created as Pending Worker via Integration using HDL

Then we run the Send LDAP process to create the user account for the pending worker

Then a new integration assigns the Pre-boarding Journey to Pending Worker using HDL

Once the Journey is assigned the Pending Worker is NOT receiving email or bell notifications about the Journey or task assigned.

If we create the pending worker from Redwood UI, the pending worker does receive Bell Notification and a notification to their personal email address.