Kudos to STO Devs and GM Ovric on this one.... per the patch notes for 9/17/20 : Resolved an issue that could prevent Captains from being able to attack one group of enemies over Boreth during the Klingon mission, “Afterlife”. Thanks guys!
I had this issue too. On PC, but was directed to this thread to report by GM. Two of the groups of Fek'Ihri ships (on the left from the initial spawn point) work fine. But the group on the right are not targetable. You can, on occasion, actually select them and highlight, but on closing within weapon range it simply…