The Yeti does not not drop the reward nor does it get crossed off the checklist on the Interlude map

The Yeti in Act 5 Interlude does not give the reward nor does it get crossed off the zone checklist on the waypoint map.

It did drop the Tusks for the quest but that's it. Ive killed the Yeti 4 times already.

Similar issue to the Molten Vault Boss Hammer not dropping.