I lost a Mossie on final in a memorable way. I had engine one leaking oil and was gear down, flaps down and near stall speed when engine one seized and the speed dropped. I quickly pushed the throttle forward to get more power out of number two, but at the speed I was going that just immediately put me in a spin with no altitude to recover. Reading up on the Mossie's single engine handling at low speed it did exactly what the books say the real one would have done. Was one of the most immersive things that happened to me in AH actually.
Always after that if I had an engine leaking oil I'd shut it down before landing so that I would not have to deal with sudden power asymmetry while landing.