sometimes when you level up some hogyokus, i odnt say all, they give you more bp than they should give, when you refresh it goes to normal. it happened to me
The same happened to me. I lost about 15k bp right after ES. It's not the first time it's happened to me. The thing is the times that it's happened, I only lose about 2 or 3k worth of bp but this time was insane. I swear they do it on purpose to get VIP's to spend more money.