Review Task Reject issue

System

I have a Review task in my WFM. The task contains files in a workarea that is read-only to the reviewers. When selects the "reject" route at runtime... the workflow proceeds and the correct subsequent tasks are activiated. However, the Review task is also reactivated. I end up with 2 active tasks.

If I change the workarea permissions so that the reviewer has read/write to the workarea... then the reject flow works properly and the Review task is not reactiviated.

Does anyone know why this is happening?
Does a review task have to point to a workarea the reviewers have read/write access to? If so, is there a way to hide a workarea from the UI even if the user has read/write access to it?