[Service Desk] Error When Editing Incident Ticket.

Hello everyone,

I have this error happening when editing a new incident.

'Incident Status Is Not Functional. To change Classification information, incident must be on Received or Assigned status. The current incident status is 'Assigned''

Thing is Incident status is Assigned or Received, and incident ticket is still not able to be edited.

Any ideas why this is happening? it's an error happening only in this Service Desk implementation.

Thanks,