Castrum/ Titan

On the 3rd boss in Castrum (Giant magitek collosus thing) at about 20% into it's hp last night, it went super defensive, every ones DMG only doing between 2-3dmg per skill.

First time it's happened out of countless times, minor bug but can be annoying/time wasting.

Same happened on titan, once. Out of nearly 90 fights with titan, I've only experienced it once where he goes super defensive and all attacks just go to 1-6dmg.

Anyone else had this happen?

yea, had this happen before in castrum. Had to die/return and reset the mob.

I've also experienced the Super defensive shield not going down in Castrum. I also like to report that when i was fighting garuda and titan, i could not refresh my DOTs when it's still on the boss. Meaning when my skill "fracture" is still left on the boss and i use "fracture" on it again to refresh it, it cannot be refresh. this happen many times.