Eldritch Battery bugd with cwdt

Dear Dev team, I've noticed that If i wear "devouring diadem" and use it for eldritch battery that the following happens:

If I trigger a cwdt setup that goes beyond the ES pool it reduces my Es Pool (500) to (1) and it stays that way for roughly 8 seconds. After that, the ES jumps back to (500).

This seems buggd? Perhaps the game considers me "dead" and My es therefore goes to zero or something? its very weird. I have 99% of my mana reserved perhaps it has something to do with that. It just seems weird that THe whole ES pool gets reduced

EDIT:
AHH I found it. Sometimes I get the eldritch mod "reduced ES per frenzy charge" and it removes my whole mana pool. Okay I know the problem now. Nevermind!