Hi All,
We looked into this.
Modifiers to Critical Strike chance are reduced against enemies 3 levels higher than the player-character. We tested a variety of modifiers to Critical Strike, such as: Berserker Stance, the Cruelty talent, and critical strike chance on gear. They all behaved the same as they did in 1.12, so we’ve concluded that there’s no bug here.
Thanks for the report!