I am also experiencing more than 1 miss of the rewards each day. The other day I didn't get the rewards for 3 out of the first 5, so I didn't even bother doing anymore that day.
Agreed, bugged.... I can't get credit for Suneh Stormbringer, Simoom the Accursed, or Matriarch Shrilliss for DayBreak Istani Bounty Hunter. Though I do have the Return to Daybreak Bounty Hunter: Domain of Istan complete.