I have done some battles with serene grace blissey but it seems like it doesn't work: when I'm using thunder it should have 60% chance of paralysis but it seems like standard 30%, I tested also flamethrower and icebeam which both give me some results like they were 10% chance of secondary effect instead of 20%. One guy in my guild, predators, also said that he had the same problem when he was trying serene grace blissey. I'd like to have a check from you on it, also because training a blissey is already painful itself and then the discovery that it doesn't work it killed me.
Thank you for attention,
Barze97