When Scott dives through the window to avoid Knives, a section of glass stays in the frame, but when Scott comes back to get his coat, the glass has disappeared.
When Scott opens the door for Ramona as she delivers his package from Amazon, the sidewalk and walkway leading to his door is covered in snow, as well as where she is standing. In all subsequent shots in this scene however, these surfaces have been partially cleared of snow. In a later scene it is shown that Ramona can melt snow with her skates, which happens instantly as she travels over it. Therefore, at the very least the spot where Ramona is standing should be melted when Scott opens the door.
After Envy Adams calls Scott and the crew backstage, Todd Ingram's wrist bands appear and disappear while his arms are crossed.
The coffee mug changes position in Scott's hands during the opening scene at the breakfast table.
During the fight scene with Todd in the back alley, a van in the background disappears and reappears at different screen transitions.
When Ramona offers Scott tea at her house, she decides to have a cup of Sleepy Time Tea. We can see the box is from Celestial Seasonings; this brand of tea is well known for excluding the string and tag from its bag design to reduce waste. But as Ramona picks up her cup of tea, we can see a string and tag.
Fainaru fantajî IV (1991) was released as Final Fantasy 4 in Japan but re-titled as Final Fantasy 2 in the United States and Canada, so Scott got the number right.
Near the end, when Scott sits on the swing with his sister, she calls him "little brother." Stacey is 18; Scott is 22. This is a repeated line from the original comic, where Stacey is seen as more mature and "older".
Amazon.ca does not have its own delivery people, instead sending packages by regular mail or Canada Post's Xpresspost system. But some leeway must be allowed here, as Ramona uses as a magic time portal as a delivery route. If such a swift and efficient method existed, Amazon would surely adopt it.
At the start of the Scott versus Todd fight, Lynette Guycott (Todd's drummer) is first leaning against the wall, disappears from the frame, and then reappears when the scene shifts. This is an in-joke to the graphic novel, where this character can teleport at will.
It seems as if Scott's front door has a different handle when Wallace says "weren't you meant to take your fake high school girlfriend to the library a half-hour ago?" If you look closely, it's the bathroom door, not the front door.
When fighting Roxy, she tells Ramona that since it's a league fight, Scott has to use his own hands to defeat Roxy, yet he never touches the Katayanagi twins.
In the Bass Battle scene, the bass that Todd Ingram plays does not have enough frets to play the notes in the last part of his solo.
When Scott fights Roxy, Ramona holds his hands while punching her. One punch clearly misses Roxy's face, but the sound of a punch is heard.
In the bass battle scene, the graphics in the beginning say Scott is playing the note "D". In fact, he is playing a "B".
While the band room is at the back of Lee's Palace, when Scott is thrown through the wall, he should have ended up in the parking lot that is actually across the alley.
During the fight with Roxy (evil ex #4), Roxy falls forward before Ramona's high kick starts its downswing.
Todd and Scott both use incorrect phrasing when debating grammar (perhaps for comedic purposes), with Todd saying, "I and he," and Scott replying, "He and me." By standard English grammar rules, subject pronouns (replacing "we") must remain subject pronouns, with the 1st-person listed last. Thus, "he and I" is correct. Perhaps Scott himself has evil lurking within.
After Gideon's first scene, when he is pretending to make nice, he begins a sentence with "Between you and I...," should be "Between you and me."
Ramona Flower's eyebrows are not colored the same as her various hair colors.