I kept seeing more stars flying after the incident earlier which raised a red flag because I was playing in a normal map(not elite). So I checked my elite dead city mob kills before and after killing those particular enemies that look like Amra-zu . The star I seen is definitely giving credit for an elite dead city enemy kill and only those mobs that look like Amra-zu give the kill credit though not all of them do it. So I think what happened is Fid died from an elite level mob and not amrazu. So it's still a bug, just not what we initially thought.