Is this a bug or a feature?

Well, I've noticed that since recently, when you are close to full hunger/thirst and eat something that refills both, you either get very little or no saturation of the second one at all. It is really annoying to have ten tomatoes in your inventory and 100% hunger, but 10% percent water because you cannot get it saturated. If it is a feature, it is really stupid and makes some very stupid situations. EDIT: Thanks everybody for clearing up a bit!