It happens, whether because of campaigning or a mistake or a misguided sense that certain perfs should be pushed where they don’t belong.
And it seems to pay off because all these people won their categories (with one still pending, but building steam).
Also, Geoffrey Rush was one of three actors to play the lead in 1996’s Shine and he copped Best Actor anyway. Still, I don’t think that many people felt it was much of a miscarriage of justice since his performance dominated the film.
Can you think of any other categorical mixups in Oscar history?