The perfect child is invisible, a non-entity until trotted out to perform childhood cuteness, which is more often than not a parody of adulthood.
Many children are taught to hide from confrontation and never stand out, a “good boy/girl” coping tactic to avoid the ire of a tantrum-throwing, belittling bully (parent, sibling, teacher, classmate). The best strategy to avoid causing ripples is avoidance and disappearance: to be perfect is to be perfectly invisible, a polite genie that appears when the lamp is rubbed.
Yet, this conflict avoidance increases relationship conflict: there is no intimacy with an apparition.