Calculate response and resolution time from Ticket created time

Calculate response and resolution time from Ticket created time

Hi Guys,

Do anyone willing to explain how this feature works for SLA? We found there is a bug when we enable this feature on SLA. 


Upon we enable this feature on our SLA, we updated the ticket status and the system changes the due date to the last year's date. Please refer to the image below. We suspect this is a bug or we are the one who doesn't have any idea how it works.


Thank you.