This can be recreated by having an opponent remove a creature on your turn while tragic trajectory is in the graveyard; after leveling it up and getting tragic trajectory back the void will not be active despite a creature having left the battlefield.
This can be recreated by having an opponent remove a creature on your turn while tragic trajectory is in the graveyard; after leveling it up and getting tragic trajectory back the void will not be active despite a creature having left the battlefield.