As of 0.112 memories in tears still does not work

Since it should make all team appropriate artifacts 50% more powerful, we just take max mana as a clear indication. On that, it fails.
Out of combat equipping/unequipping doesnt affect speed/int either. Though its not a clear indicator, since we can assume it may change in combat only? Maybe an artifact is bugged. Its rather rare, id gladly provide save file if needed.