Factual error: With a number of flowers blooming, the movie appears take place in spring. There are many scenes of central park with flowering trees and shrubs in full bloom. However, the yellow blooming shrubs called forsythia do not bloom at the same time as the flowering cherry trees. Forsythias bloom about a month earlier than cherries and are usually the first items to bloom in spring.
Factual error: Speed radar guns work by measuring the speed of an object that is either approaching or moving away from it. So when it shows Sonic running across, the beam giving the measurement wouldn't work, and he would have barely even registered on the device. (00:04:44)
Factual error: The USA map is inaccurate for the year it is set in. It shows all states but in 1886, many of the northwest states (e.g. Montana, Idaho, the Dakotas) weren't states until 1889+.
Factual error: Parker is looking for the phone her mom hid. She is moving a box of cereals. The cereal ingredient label has a few joke entries you may Miss at first (goat hair, bitter almond paste, false eyelashes), but the nutrition facts tab is also incoherent in a way too subtle to be a deliberate joke; sub-categories of each macronutrients exceed the total. For instance, it has 5 g of Fat in total, but 25 g of Cholesterol and 56 g of Saturated fat (at most it could be mg). (01:00:25)
Factual error: In the antique shop, Woody is at a point where he's at the center of a tug-o-war between two sides, with the "bad toys" pulling on his draw string for his voice box. The voice box can still be heard spouting its lines, despite the fact that the tension on the string is never released allowing it to draw the string back in, which is what makes the sound. It can't make it's sounds with the string continually out in the pulled position.
Factual error: Towards the end of the movie when Superman and Henshaw are fighting on the Watch Tower in space, Lois hits the sun shades to lower them so that direct sunlight can hit Superman and power him up. This is out in space with no atmosphere to filter the sunlight. The reason the blockers were there was for this reason, to keep the harmful unfiltered sun light from hitting people on the ship through the windows. However, she is able to stand there in the direct light after it's done and kiss and hold Superman without being hurt or burned by the intense direct unfiltered sunlight or its radiation.
Factual error: It's a superhero movie, but the human Catwoman escapes Batman by jumping off the building, onto a train moving at full speed, in a fall that is shown taking at least 10 floors (first shot, she is still upside down) + another 10 (when she flips so she can land on her feet). Over twenty floors of casual, unassisted freefall jump feel a little over the top already, and again, it's on the top of a moving train, that alone should be impossible to happen the way it does here, not affected by the lateral speed of the train at all. (00:10:40)