Runic Stave, a BoE, dropped for me in Darkshore the other day. What's odd is that ATT shows a --- where it normally displays whether or not the item is collected. I can confirm by looking at my account stats on Wowhead, that I have indeed "learned" it, even though you can see in the lower area it says "Not Learnable". Rescanning does nothing ti fix. Is there something special about this item that is causing this?

The "Cannot be learned" is from Can I Mog It? addon.

Currently we have it listed as --- because moved it from the Off-Hand category to the Two-Hand category. When they did this they stripped the sourceID via normal means. I'll try looking for it again shortly.

Currently though the --- means that it is uncollectible.

Fixed in commit 1fd0883