I'm not following. He said that 1) such training is possible, and that 2) at least in some cases, it is ignored or that dogs who have this capability are rejec

I'm not following. He said that 1) such training is possible, and that 2) at least in some cases, it is ignored or that dogs who have this capability are rejected. So indeed, the feature appears, at least according to his source, to be available. And it also appears to be regarded as (or mistaken for) a bug by the users.