For me, it is nearly impossible to farm any herbs or ore. The worst of these, Twilight Jasmine, is absolutely terrible. A good 30-50% of the nodes in Twilight Highlands are bugged in some way: floating in the air, in the side of a mountain, or (as is most common) phased.

I find it absolutely silly that such a major issue hasn't been fixed or even acknowledged yet. It is most certainly there, as I've seen it firsthand in nearly every Cataclysm zone while leveling both herbalism and mining. Some bugged nodes are possible to get after a while of jumping, landing on trees, or racing to get to the node before it phases out of existence.

But anyway, should we expect a fix soon?