Morde + Jhin
If Morde gets a ghost of Jhin, Jhin will remain on whatever bullet he was on when he died. He won't reload unless he was out of bullets when he died in which case he will reload and remain on the first bullet.
This is all fine when he is on bullet 1/2/3 (annoying that he doesn't get the 4th, but fine).
However, if he was on the 4th bullet, this causes every shot he fires to be that 4th bullet, with no "reload" time.