Single post in Update box information

I've used a lot of boxes and I've noticed that some of the items I've gotten don't line up with box contents and probabilities information. I don't know if this was a glitch, but a while ago I opened a box and a got a summon item that I hadn't unlocked yet without using a legendary seal. The contents and probabilities info says that that can't happen. Anyway, it would be great if you could update this so that it doesn't eventually become a problem.