@Riot Question about Camille Ultimate

I towerdived a camille today, assuming when she is dead she is not in her ult, so it would be deactivated. But it didn't... Why does the camiile ult stay after death? She is not in the zone anymore so according to the description it should be gone. Either make the description say it stays after death or remove this secret op buff. Sounds like a lie in the description to me and I don't like it.