Summary:
There is a user who is a project leader to couple of projects as well as a supervisor to few users. Now, when the users submits a timesheet, the timesheet is sent for approval to this user and the user approves the timesheet. However, this particular timesheet was re -opened and then without changing any data on the timesheet, the timesheet was resubmitted. The resubmitted timesheet is auto approved without going to the appropriate supervisor and project leader for approval.

Resolution:
Unless some modification is done to a re-opened timesheet, the system will not refurbish the timesheet to the respective approvers for approval and hence will system approve it.