Primal Beast in Ursae broken, cannot capture.

So in total I've tried both capturing them in Untainted Paradise twice and buying one in an orb twice.

They do not get added to the Menagerie OR get completed if your Menagerie is full despite the FAQ saying your worst ones get automatically removed.

When I cleared up my storage through some rituals I was able to get one of them in through an orb, yet it still does not complete despite showing up as in storage.

I am having this same issue. The nets work, the count for the nets goes down, Einar takes the creature and says it is captured, but it doesn't show up in the menagerie nor does the counter for it go up. I tried with common, uncommon and rare Primal Beast.

**edit** I just tried one last time with a rare Primal Beast, and it finally registered!

If you add them from an orb they won't count for the bestiary book, which is intended and was announced that way.

If you capture them in Untainted Paradise, you are very likely trying to capture a white creature. That one has the lowest ranking/priority, because it has no fancy mods and is white. If your menagery has no room in that cage, the beast will be instantly discarded and will not unlock in the book, because it never gets actually added to your storage.

Make room in your menagery ursae storage and then capture them with nets.