When you hover over Prince Sal's avatar the green circle and arrows as well as any text doesn't appear on the character like others. There's also times where Prince Sal will get stuck in his spot where he can't be swapped out with anyone or move positions. Often times it's hard to swap him into a different spot in the formations as well. None of this clears up with restarting the game.

EDIT: The same thing for The Bush Wacker

I'll be checking other characters and listing them if I find more.