When you get petrified (i.e. get 99 stacks) during the Cairn encounter in BotP (at least tested with the challenge mote, but possibly also in normal), your boon/condi duration gets significantly reduced. Didn’t think to check exact values, but for my boon duration I dropped about 50%.
Relogging fixed it, but it’s not obvious that the duration has gotten decreased in the first place, so most people may not even notice.