There's a 100% drop rate on organs, this shouldn't happen.Like, in the last hour or so I did a full Uber run and got 2/4 ingredients. Then I went and farmed two sets of keys to attempt to get the last two ingredients, did so, and then went 0/2 again. All on T6.
If you don't see a drop, tp out and go back into the realm. I've had that happen to me before where it takes until the 2nd time to appear.