It happened during a dungeon run. My net connection was delayed a bit and I spam the buffs but then I got dc'ed. And when I logged in again and I found out that my buff was doubled. Maybe you guys can figured it out and make a hack for it :P
I'm telling you guys it's not just icon bug. This is for real my damage was increased and crit rate / dmg too.
I've enjoyed the 1,500 seconds of the buff bug during my dungeon
Don't you guys want it too? lol