You are very welcome to create a feedback thread requesting the monsters to be changed, however this is not a bug. You can see the same behavior in other areas such as the monsters in CPQ not having the same elemental weakness as the outside real version.
So why keep jr.rog and crinsom rog holy weak?didnt check the rest but probly there are more bosses elemental weak before manon stage. I am almost sure manon was ice weak on GMS dojo... dont know just doesnt make sanse
