Hi, this might be fixed, but recently over the past couple of updates, I've been having trouble with manually spawning bosses. In my normal mode world (at the time of the bug, post-golem) I have tried to summon the Plaguebringer Goliath while flying above the jungle, and a few time the game just ate my Abomination. I just thought I had been too high above the jungle, but recently in my revengeance world, when trying to spawn slime god, the same glitch happened, a few time standing on platforms a couple blocks above the ground, and a few times on the ground. It's more of a convenience problem in my case, but for things like the Plaguebringer Goliath, farming stingers can be annoying after only one of your Abominations works.
Your Whiniest Forum User,
XenoEvil