Dragon Shard of Knowledge taking loot slots in M+?

Is this a bug, or something we can have confirmed?
I thought for sure someone telling me they “ran a M+ and got no items” was crazy because he says weird stuff.

3 keys later, what do I see in the chest. A Dragon Shard of Knowledge. “Cool drop”, I thought. Until we all wondered where the 2nd item was. Then it clicked - This took one of the loot items like Matrix did in M0. But why. This is not equivalent to gear. It is not tradable. It took one of the 2 items that can come out of a chest.

Can we get confirmation if this is a bug, or intended? It absolutely does not feel like it’s intentional or should belong.