Resetting combativity after using "Perform! 10x"

[Felis]

I'm sure it was already reported but it is still a nuisance. 

I'm using the gold monthly card so there is no koban warning when I click "perform 10x" and when I accidentally click it when under 10 combativity it is reset to zero and I don't get any rewards and even worse any attraction shards. 

You must realize it is especially annoying right now when the Legendary Days are on the way and we have only 4 days to win the new girl. 

I realize you must have a lot of work but please bump this issue up on the "to do" list. As we only get 48 combativity a day, loosing a fifth of it to a bug is disheartening.