Why the Line Manager can not see candidates in his own job requisitions?

We are migrating to redwood the Client environment, so the case is this: The Line manager add a job requisition, when he navigate to the details he can see there is 6 new candidates (for example), but when enter to the list (clicking in the number 6), then the list is blank, even if we cancel all filters.

If the line manager navigates to the talent pools or Candidate search he can find the candidates and see all their profile, and add a candidate to a job requisition; but when he navigates to this job requisition after adding the candidate, again can not see this candidate (or any candidate) Has someone happened this before?