Pretty much title. I haven't played Ahri in like 2 weeks, tried it her today and noticed this thing. If you hit charm on someone and die while the target is still charmed, it cleanses it. I don't think it is supposed to work like that, I am pretty sure that did not happen before.
I Spread Cancer6 votesWould you fuck a corpse?
ModThe Djinn3 votesI believe it is supposed to do that, actually. Because you're charmed BY Ahri, and when she's dead there's no one to be charmed by. Taunts do the same thing -- if the source of the taunt dies, the taunt breaks.
nelogis1 votesExactly this, I haven't tested it but I think it works the same with Eve/Rakan charm too.
The wiki also describes Taunt/Charm cc the same way as in "they walk/attack the source" and if there is no source then there is no need to walk towards it or attack it.
Bronze fiend1 votesYou have a point, but when thresh hooks and dies immediately afterwards, you are still hooked. Not being dragged, but still stuck in place for the full duration of the hook.
ModThe Djinn1 votes[{quoted}](name=Bronze fiend,realm=EUNE,application-id=LqLKtMpN,discussion-id=w88O5ELA,comment-id=00000001,timestamp=2018-10-25T18:21:56.369+0000)
You have a point, but when thresh hooks and dies immediately afterwards, you are still hooked. Not being dragged, but still stuck in place for the full duration of the hook.
Because the hook also applies a stun as a secondary effect. The stun persists, but the pulling action (the part dependent on the champion) does not.
Lord Guan1 votesCharms, fears, and taunts all work like this. Examples: 
dies, nothing to be attracted to. 
dies, nothing to run away in fear from. 
dies, nothing there taunting you to attack.
Noor Sakata1 votesWell there is a bug when she dies , her Q gets cancelled sometimes
DeracadaVenom1 votesIt’s supposed to be that way bud