Role changes for a user with two Roles results in unexpected perspective changes

Ensure that logged in user has roles "admin" as well as "process-admin". Go to the Settings (click on kog wheel) -> Roles -> process-admin. Change any permissions in Workbench or Editors. For example, in Editors, enable Case Management (Preview). Save the changes. Actual result It is not possible to navigate to the perspectives, for which process-admin role doesn't have permissions, but admin role has. In this specific case it applies to some of the Workbench, Pages, Spaces and Projects perspectives. Expected result It is possible to navigate to all perspectives that a user has permissions for. If at least one role has a permission to navigate to any perspective, a user has a permission to navigate there even in case, that some other role doesn't have necessary permissions.