Cataclysm's Wake Atlas Passive Progression Bug - Corrupted Nexus / Map Boss Interaction

Corrupted Nexus bosses can have spawning disabled if the Map Boss modifier is also present on the map and the player dies while attempting the normal boss. It is assumed that this is due to the following portion of the Dawn of the Hunt endgame changes:

"If you decide to rush to the Map Boss without interacting with any of the other Map content and then die, you will respawn at the Boss checkpoint and only the Map Boss will be present. All of the other monsters and content will be removed. This is to prevent cases where players would be able to farm multiple copies of the same rewards by dying on purpose."

Defeating the normal map boss on subsequent attempts will still cause the map to be "completed" causing the corruption to be cleansed from the surrounding areas, but the item that rewards Atlas Passive points will not drop and the Cataclysm's Wake quest will not progress.