Oh what. I can't seem to reproduce this in any way. Is it during when the thorwing animation should be playing or just when the egg is being held static.
Oh stragne that's really weird because the whole system is running on an animated sprite2d including the empty hand so it's weird that animation is showing while the others are not. If you wouldn't mind could you try re downloading the game just to see if it persists because i cant get it to reproduce at all.