Logs did not show, but I believe a summon dealt the death blow to the boss. approx. 1:30 am EST. Pretty sure it's a known issue, but was told to make the report.

Hm!

This is pretty weird. I have definitely had reports where summons killing quest bosses worked properly, and I've definitely had reports where summons killing quest bosses caused bugs.

Hmmm.

Thank you for the report, anyhow.