In the meeting between Hélène and Jean in which they tell each other that there is no more love between the two, the clock on the mantelpiece jumps from ten to twelve to ten past twelve within seconds.
When Agnes is dancing in the club, her costume changes between when she is dancing and when she goes to her dressing room. The lower edge of the costume on her thighs varies between a straight edge and a ruffled one; the style and color of her shoes also change between shots both during and after her dance.
When Agnes falls after dancing in her apartment, her head is seen resting upon the skirt of her costume. But in the close shot when her mother goes to her, her head is seen to be on the floor.
Agnes changes position between shots after she faints at her wedding reception.