Since Specters of the rail, Dark Sectors and Trials had halved credit rewards. In Hotfix Specters of the Rail 2.1 on  August 10th, 2016, Dark Sectors were fixed as per: Fixed Dark Sector Credit rewards being unintentionally cut in half. It has been months since this update and trials are still reduced. If this is intentional I would like to be informed. This fix would also incentivize people to play raids more, especially after the Secura Lecta change that was made a while back.