Season Journey Chapter 5 has an objective to collect 8 fugitive heads but the number is off by one. For example I have 2 heads but the count indicates I have only one. My sister who I play the game with has the exact same problem. It appears to miss the first fugitive head collected.
The seasonal objective is to collect fugitive heads during headhunts. I believe it doesn’t count ones gained in rootholds. Perhaps both of you ran one of those together and dropped one there?