In a DM N run today, I tried to MC specific mobs like I usually do, only to have MC break after about 5 seconds. I'd get off 2-3 attacks with the MC'd unit, then the MC would just spontaneously end.
Yes, I know MC has a range. I made it a point to not move the MC'd unit at all, so it should not be breaking due to range.
It did work fine a couple times, but in a single run I had three MC's spontaneously break within seconds. Terrible RNG, or ninja hotfix breaking something?