Sigrid bug on Ancient Battlefield 9

[onyx harness]

My Sigrid setting: 288 accuracy + her passive 30 accuracy + food buff 10 = 328 accuracy in total
all skill lv max

Boss need 220 accuracy to put debuff

for some reason, my Sigrid can't penalty on the boss with 328 acc.

It's bug or new mechanic for the game? if bug, pls fix it.

Thanks

[simple sail]

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