Storm relic energy vulnerability doesn't work

Without relic

With relic

Surely a 5* relic, albeit not fully levelled, increases damage by at least 1 whole unit right?
The overall damage increase from relics are very hard to notice which begs the question is this the only relic bugged? Probably not.

With relic

Surely a 5* relic, albeit not fully levelled, increases damage by at least 1 whole unit right?
The overall damage increase from relics are very hard to notice which begs the question is this the only relic bugged? Probably not.
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Also, Auntm.ai