I searched a bit if there was another post about this but couldn't find any, so if it has already been posted, I apologize. I was trying out a team in survival trial using the Calm Mind talent of Midnight Blade (the one that gives 20 chakra instead of attacking). The problem was that half of the time, the system didn't register the chakra given and didn't let me launch mysteries. The mysteries would light up for a second sometimes then the cost of the chakra back to red and it would tell me I didn'thave enough chakra even though thebar said 20 (or 40 or 60). It happened with all the mysteries at one point or another.
I wonder if this is a known bug or not, since I don't see many Lightning mains using calm mind. I was trying it out to see how it worked.