Around 00:43:03, Céline's glass is half empty. On the next shot, it's almost full.
During the night club sequence, Ophélia's dance move with the fingers over the eyes has been mistaken as being in imitation of the characters in Pulp Fiction (1994) which would make it too early for them to have seen that movie. However the watusi, and the variation done by Batman known as the "batusi" in Batman (1966), the dances done by the characters in Pulp Fiction, have existed since the 1960s.
Many words, speech mannerisms and expressions used throughout the movie were not common in the mid-nineties, such as "j'ai buggé" or "Bref! ...".
During the night club sequence, Ophélie twerks at some point. However, the movie takes place in the summer of 1994 and twerk would not be known in France until the mid 2010s.
Ophelie talks about different French Navy missions and deployments of her boyfriend
Clement. She mentions Kosovo but the film is set in 1994, five years before French Navy deployed in missions regarding Kosovo.