My 2016 did the same thing,was replaced about 8 months ago and 10k miles later is making the noise again. Going to the dealer Wednesday, took it in two weeks ago and they couldn't replicate but now it shaking and rattling like a diesel.
I found a TSB that stated if the removed the dowels alining the transmission with the engine if they don't replace with new it could cause a reoccurrence. Wonder if the dealers are not doing this.