Abomination map synth boss cannot spawn

Hello;

I've made 10+ Abomination Maps with "Map boss is accompanied by a Synth Boss" mod and synth boss never spawned, not even once.

I don't know if this is a bug or intended or reported before but right now in its current state this mod is a free buff for Abomination maps.

Sorry for my English as its not my native language i probably made mistakes.

Kind regards;

Ilhank.