Not just a tooltip change, the buff has actually been adjusted.
Before the patch, the lower rank provided +0.75% critical strike damage, while the higher rank gave +1.25%. Due to rounding however, these were both displayed as simply +1% in-game, leading to confusion between the two.
As of Patch 12.0.5, the enchants have been updated to provide exactly +1% and +2% instead, fixing the display issue and buffing the effects at the same time. They were already very good enchants for many specializations, which have just gotten better!
