Resolved Non-favorited Cerebella identified as favorite and cannot be sacrificed.

[Gamer_Shot69]

I recently leveled a silver gray matter cerebella which was favorited and once she became a gold i can not sacrifice her because the game identifies her as "favorited" just to make sure that the bug isnt tied to this specific character card i leveled another silver gray matter without favoriting it into gold and it could be sacrificed normally. To be clear this is the sacrificial process to evolve a different gold into diamond.

 

[Liam]

This is a known issue, we'll get it fixed. Thanks for the report!

The pop up is just incorrect here. The reason you can't sacrifice using her is because she is on your team still. You can't sacrifice characters that are on your team.