“As far as I know there haven’t been any changes to their spawn rate”

It hasn’t changed in the hotfix, meaning they don’t spawn anymore after the Pet patch, or that you all believe they are all right and this issue does not need to be fixed? They are not the only broken spawn, for instance in the den the armorers able to craft flawless hyena armor are not spawning, simply because where there was a fixed spawn of armorers now any kind of thralls spawns, from dancers to tanners, meaning that the chances that a single named thrall would spawn are incredibly low. I’ve been literally spent days just farming the Den over and over for hours, and not a single time the named armorers spawned. We are talking about hyena fur armors, it’s not like they could craft something that would break the game. I am quite sure that checking and eventually fixing a spawn point is not that complex, I trust you have a table with what can spawn and a percentage chance.