Neeko bug?
Right now if Neeko takes lethal damage while she is transformed into another champion it will announce the other champion as dead and show them as dead in the death timer.
99% of the time I think this passive is amazing, but telling me the wrong champion was killed seems wrong.
I discovered this by having Renekton being announced dead, Renekton's death timer shows up, and then Renekton showed up in top lane. I assumed it had to be Neeko, because Renekton was dead. It was really Renekton, and he did Renekton stuff on my face after I approached him like I was going to kill a Neeko.