I agree with everything Rayven has said.
That being said on my part, I've occasionally had a temporary effect stay longer than it should have. When I did the Stormcloak mission to take Solitude, I hit General Tallius with Chillrend for the final strike before he tells everyone to stop fighting, and that strike ended up being a paralyzing one, so his model was in the position he was paralyzed in, but still talking. It was... odd. And even after I killed him, his model was still in that position. Nothing major, but yeah.