Hi Kevin,
I'm the creator of such game. As fas as I know, there is no problem in not voting for every game in a jam.
I could try to compile the game for MacOS, but I tell in advance that I never did so lol.
If the organizer or itch.io ends up saying that I can't update the files mid-voting, I'd love to hear some feedback from you after the jam :)
Sorry for the inconvenience :(