I'm afraid that's not an anomaly. It's quite normal with their chromium-tanned front quarter horsehide. Eventually the color transfer will be reduced (once a lot of it's already rubbed off on everything else), but it's unlikely ever to go away completely. To slow it down somewhat you can give it a nice buffing all over with a cotton rag, by hand. But that's just the way it is. I have the 'cordovan' fqhh and it's even worse than the black. Much, much worse.
Their mid-weight 'jerky' horsehide, by the way, doesn't have that problem at all. Completely different tanning process. It's lighter, more pliable, less showy, extremely tough, and doesn't suffer from color transfer. My fqhh jacket stays in the closet now, and my mid-weight horse jacket stays in constant rotation.