The opening narration notes that Joseph was born in 1965, and that he died at age 6. However, we later see that his headstone gives 1968 as his year of death.
When Faunia introduces herself to Abel in the foyer, she takes off her glasses and shakes his hand. In the very next shot, as Abel is greeting Henri, she removes her glasses again.
On Christmas Eve when Simon is missing and they decide to go look for him, Sylvia hugs Ivan with her arms below his, but after a cut to another angle, she suddenly holds her hands on his cheeks and leans in to kiss him.
When Henri shows a coin to Junon, he first holds it on one edge, in the next shot from behind his thumb and index finger are already around it, before the next frontal shot shows him changing his grip from former to latter position.
While Henri is at the barber shop being shaven, the shaving cream appears and disappears from his upper lip between shots.
When Henri and Faunia sneak out of the house, the camera operator is clearly visible in the door window.