Katagawa Jr. drop rates

I have been farming Katagawa Jr for the last few weeks often seeing 2-3 legendaries dropping for each kill. Last night after the patch I went to farm him some more and went 4-5 kills without seeing a single drop. This morning I am at kill 7 without a single legendary. Dont see anything in the patch notes about drop rates or Katagawa. Anyone else experience this?

I previously got 1 leg every 3 runs or so with him. I think you hit some hard RNG prior.