Hello! I have been having playing on my first terraria modpack which used a lot of different mods (from memory Calamity, Mod of Redemption, Thorium, Bosses as NPCs, Alchemy NPC lite are the biggest ones) It all went pretty smoothly until I reached the mechanical bosses. I can defeat them with no problem but none of them count as defeated. No loot, no message, no unlocked ores (since Calamity alters progression)... That last part is the most problematic.
I have seen someone have the same issue less than a week ago and say they have resolved it, but not how. If anyone does know how to fix it or how I could potentially skip the mechanical bosses, I would be very grateful