The Jem HEC deploys two Orion Interceptors instead of Tachyon Drones. I tried re-logging, selling the drones and getting more, and confirmed that they work fine on the Kar'fi. This happens on both the stock version and the purple Dil store version.
Borticus small update to you and the team on this bug. its also happening to the jemhadar dreadnought. on basic hanger for the slot and it is launching the orion interceptors also. just thought i might update you on this. if you need anymore info let me know I'll be on and off.