Other mistake: During Pinkie Pie's 'Smile Song', there is a scene where Pinkie Pie is jumping on a skipping rope (jump rope). Initially, the rope is held by two other ponies. However, at one point, these ponies are no longer holding the rope and the rope is just floating there. It isn't held by unicorn magic otherwise there would be a glow that appears when a unicorn holds something with magic, neither is anyone's horn glowing.
My Little Pony: Friendship Is Magic (2010)
1 other mistake in show generally - chronological order
Starring: Tara Strong, Tabitha St. Germain, Ashleigh Ball, Andrea Libman
Continuity mistake: When Rarity levitates the stick to mark a spot where she detected the gems, she drops the stick right after a guard "threatens" her. Then, in the same scene, the stick has mysteriously disappeared.
Rainbow Dash: Oh you want to do this the hard way? we do this the hard way!
Trivia: Pinkie Pie didn't use the trombone to get rid of the parasites. That means she planned for the exact ending. Not unlikely, considering Pinky Sense.
The Elements of Harmony (2) - S1-E2
Question: When Rainbow Dash and Fluttershy are floating with Twilight, Nightmare Moon, (In the form of smoke) floats right in Twilight's face, though she never notices it. Why is that?
Answer: The smoke floats a few feet away from Twilight and close to the camera so you might think that the smoke is right in her face.
Lily Harrison