From what I've experienced, it is fixed. The adventure page is correct and I think it's just RNG messing with you. I know damn well how much they mess with you.
Anyway, try playing for a hour or two and see how many legends/eternals you find in floor 200/500/1000. Keep doing that and if you find a consistency in drops that you like, it should be working well. It's hard for me to prove it's working but I just feel it works again. Also with luck, have as high as possible item drops to increase chances of legend/eternal drops.
@Mr_Scooty, how come you don't have 350% item drops? I think to achieve it, you have you and hirling both with fortune 20 and 4x legend item drops or 6× fortune mythstone per character plus a few additional stones. Also epiphany (5) both characters. Maybe you've got that already though? That might fix your farming problems?