Theory: leaks > premature release > bugs on release

You would have to go back further than that to see if there's a trend. There was a hint for Werewolves in the artwork for the backyard kit for kids though. Remember the glowing eyes in the bushes. Either way bugs have always been part of the Sims since the first iteration. I just want them to be fix. I don't mind the leaks but I don't think the two are connected, like if the dlc have bugs they'll just leak the game.