Factual error: The masquerade is set on New Year's Eve. We know that because its poster reads "Bal masqué de la Saint-Sylvestre" - St. Sylvester's Day is December 31st and it's common in French to call that day by its saint's name. Firmin (or André) says that it's been "Three months of relief, of delight, of Elysian peace." This means that the events on the opera house's roof took place in late September or early October at most. When Paris gets snow, it's usually in January, the coldest month according to Météo France. With average temperatures of 15 degrees in October, and higher in September, having a good centimetre or two of snow on the rooftop at that time of year is quite implausible. Submitted by Sereenie

Other: During "Don Juan Triumphant" Christine and Meg have MUCH less make up on than any other members of the cast, which is I suppose used to separate them and make them more noticeable, but on a stage that big it would be required to have a lot of makeup just like everyone else, because otherwise the audience can't see your face.

Audio problem: When Christine and Raoul leave the lair, singing to each other, she turns her head back toward the Phantom as we hear her singing 'each night, each morning,' but we can see she isn't saying anything: her mouth and lips aren't moving. It can't be that the Phantom is remembering the rooftop scene, because you hear the voices echoing in the cave, resonating differently as they move away. This is confirmed by the screenplay (p. 140 of "The Phantom of the Opera Companion"), which states that the Phantom hears them singing in the distance. (Timecode) Submitted by Sereenie

Deliberate "mistake": When Christine is in her dressing room right after Hannibal, all of the candles are shown going out. The Phantom and Christine begin to sing. There are no windows in the room and the candles have all gone out, yet the room is still somehow lit. The light is not coming from the mirror where the phantom is yet.

Other: At the end of the movie we can see Christine's grave. The inscription on her tombstone is in English and she is even called "Countess de Chagny" instead of "Comtesse." But the entire story takes place in France, and all the other signs and posters besides this grave are in French. There is no reason whatsoever why the inscription should be in English instead of in French, especially considering that the closeness between the words countess and comtesse would make the title easily recognisable even by non-French speakers.

Visible crew/equipment: Just before Raoul jumps down the hole after the Masquerade, Patrick Wilson is obviously replaced by a stuntman who's not even trying to hide his face. He is the same stuntman used for the Phantom in the graveyard swordfight. (Timecode) Submitted by Sereenie

Continuity: After the the auction, the old Madame Giry bows her head at Raoul. In the following shot, we can see her reflection in Raoul's window, bowing her head once more. Furthermore, Raoul's car leaves before her head is back in the up position. (Timecode) Submitted by Sereenie

Deliberate "mistake": When the Phantom throws his score for 'Don Juan Triumphant' down the stairs, the portfolio only reads 'Don Juan.' (Timecode) Submitted by Sereenie

Plot hole: On the opera house's rooftop, Christine, sick with worry and fear, decides to run away with Raoul right after the performance so that he can hide and protect her from the Phantom, and tells him to prepare his horses so they can leave right away. Then nothing happens. We're brought three months forward to the masquerade and no mention is ever made again of what happened to change their minds and why they did not run away. If she is scared enough to want to run away right away, not even waiting until the next day to pack her things, there is no way that she'll feel comfortable and safe enough to come back within a mere three months. While in the stage show, that was due to the hubbub surrounding the chandelier crashing, that event was pushed back later in the movie, leaving a gaping hole in the plot. Submitted by Sereenie

Continuity: When the Phantom in "Music of the Night" goes to show Christine the wax figure of herself there is a tall lit candle behind him. When she faints he moves in front of it to catch her and when he then moves away the candle is out - the only way the flame could of have been put out was if Christine's hair had smothered it (which would of course have set her hair alight). (Timecode)

Deliberate "mistake": On the rooftop scene after Raoul and Christine have left the Phantom, he bends down to pick up a rose, then runs to the statue and climbs up, and finishes his song. There are footprints in the snow all the way to the base of the statue. The footprints are a definite error, as they are next to each other instead of spaced apart which would have occurred if a person was running. And the footprints were not made by Christine and Raoul, they are in the wrong place for where they were standing. (Timecode)

Continuity: After Christine removes the Phantom's mask for the first time, he looks at himself in a mirror: his 'bad side' (the right one) shows no sign of deformity. (Timecode) Submitted by Sereenie