Anyone got a clue? Since the 2.16 patch, not seen them spawn, ever.

They're normally at Western La Noscea X17Y19 sort of area, and I have them for my Dragoon Hunting Log, but they're not there, and I've been waiting for like 30 minutes, and no one has killed them. They're just not there.

Can anyone shed any light as to if this is a game bug, or if something has changed and perhaps they spawn only at certain times of the day, or something?