When i add group/user in the sharing list, if the user is a member of the group sogo prioritize the first entry...

example:

• i share a calendar, in first i add a group with View permission (userA is a member of this group).
• after, i add userA with Modify permission.
  in this case, sogo prioritize the View permission for userA.
  but if userA is in first of the list, sogo give the Modify permission....