If you die in a corrupt map, the (Corrupt) boss despawns/never spawns again on that map.

If you die(or unfortunately get disconnected because of the server) while you re doing a corrupt map with a corrupt boss in it, the boss never spawns again and you have to find another corrupt map.

Frankly this is annoying because it causes slower progress of the atlas, from reading this seems to have been a thing since 0.1 or 0.2 but i would like to submit another report to let people know this is still an issue.