Did they finally work around Snipe?

Wait, you mean Snipe used to kill them for some reason?

While Snipe and Heaven's Hammer give the appearance that they are dealing full damage against such targets, the reality is that they are completely unaffected. Some of those mobs are invincible (Dark Muscle Stone, the flying books in the haunted house, JQ stirges and neckis) while few others are "default attack only" mobs (Happyville Snowman, Halloween ghosts, Agent Box).

Oddly enough, Blood Stirges are the only mobs that actually say "miss" when I use the BanHammer on them o.O

As a good note, invincible flags and that other flag are NOT boss flags. But for their intents and purposes, they're pretty much unkillable by means not intended.

Yes, it did used to work, and I have yet to check, but I believe it still does on many of the earlier ones (excluding blood stirges). As another example, those ghosts in Heny that you needed to explode to kill, and the Bot-Catcher pre-defense downed could be OKOed by snipe.

The thing I was trying to get at was if they were actually starting to work around it. As for the boxes, I believe you had it at "set damage flag". But I'm going to assume that the JQ Hoguls have boss flags and really high hp unless someone else can find some sort of evidence.

It seems to me though, that the problem lies within this "invincible flag" you mentioned. We go through those like nothing and I'd like to see it changed.