Cannot start contextual journey for future employee

Summary:

We are currently facing the issue that we cannot start a journey for a future employee. What could be the issue? We are able to search for and find this future employee in a task, like change entry date, change assignment etc. So its not an access issue as our person security profiles give access to future workers or use the seeded "view all people".

The behavior is the same for every contextual journey we have, but only for future workers. Everything is fine for existing workers, whether they are employees, contingents, or pending workers.

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