Resolved Fighter mustakenly seen as a favourite

[Cueo]

Yesterday I tried sacrificing some of my fighters to evolve a cold stones beowulf to silver, but I wasn't able to because the game prompted me saying one was flagged as favourite.
I tried flagging and unflagging him, but it did not help.
I have no idea how to reproduce this bug.
If you think it can be helpful, I will find a way to record video feed.

 

[Gylfie]

The popup is wrong. You can’t sacrifice the fighter because he is currently on a team.

 

[Cueo]

Today, when I logged in, that fighter was correctly flagged as favourite: I unflagged and successfully sacrificed him.
I don't know wether he was on a theam nor if I had flagged him as favourite yesterday in the end (I changed his status many times as a test yesterday)

 

[Bones]

Pop-up is wrong, should be fixed in today's update.