The new arcanes sometimes Theorem demulcent didnt refresh its duration when entering the area created by residual arcanes

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i notice that sometimes it doesnt refresh or even trigger the theorem demulcent effect, i havent tried it on other theorem arcanes, but i think it is bugged? 

And can someone explain why the area of effect for residual viremia is smaller than other residual arcanes lol

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And i just found that if you stand on 3 overlapping area created by residual arcanes, the stacks is bugged because it keep switching randomly from 12-15