I've gone into Spark of Ion twice today. Everything is fine until the last room. After getting the spark from Hal and opening the door, the room is empty, and there's no way to finish the instance. We warped to rally and search the entire board for any orange lanterns we might have missed. The orange lanterns in the last room never spawned, so we weren't able to finish the duo.
https://dgcissuetracker.com/browse/DC-1153 You can vote on the issue as well so it gets more attention