WoW Classic - chance to critical hit is bugged

My main character in wow classic (Nileen - Warlock) is bugged, in the last 3 raids it had improper critical hit chance. I have noticed that I have 10% less chance to hit then it should be. For example yesterday in AQ40 I dealed 23% crit chance, with gear that gives me 6%, with buffs (10% Onyxia, 5% Song Flower, 3% Dire Maul Tribute), + My talents gives 5%. On 6th of september I was in Molten Core where I dealt 5,5% crit at all (I was without World Buffs - but with the same gear and talents) .

Hey Nileen,

Please report bugs about WoW Classic in here, or in-game.