Is this a bug or did I miss a nerf?

I know at one point I was able to double the amount of Vaal Summon Skeletons with Dark Monarch. This appears to no longer be the case, but I don't remember there being an update or anything. I don't see why they would make the change as even the 150+ skeletons was still pretty much a meme build but it was fun anyway. Any ideas on if this a just a bug or an intended nerf?