Boss checklist checking off bosses I haven't beat : r/Terraria

I just deafeated moon lord and empress of light and its says that i need to kill one more boss to get Achievement : r/Terraria

Terraria 1.4 Progression Checklist

tModLoader - Boss Highlights

e1b888b4788d1d501b5cc77d48de335ec2867099.png

So, I was playing Calamity, and for some reason, some of the bosses I've already beaten got unchecked from the checklist? The ones I crossed out are the ones that got unchecked

The 100 Hardest Video Game Bosses, Ranked By Difficulty

tModLoader - Boss Highlights, Page 4

8644dcc98f86bc03b40bb6e0274042b0ac58025b.png

b63c4761394583aa49489f41f2f61143aa1431f0.png

2023 Best mage weapon for duke fishron extra Bloody