On my Fantasy player, the Happy button is jumping up and down like MWario on a koopa.
That can sometimes happen if you have made a custom mood with the same name as one of the existing moods. That makes this weird little bug that makes them dance.
If that is the case just recreate your custom mood with a (even slightly) different name and then delete the problematic one and that should fix the jumpiness! 
Tracked it down to a Community content of Dragon Heist Music.
I can’t really delete their content. 
It isn’t critical to have so I will just remove the set from my Fantasy Player.