Corrected entry: During a flashback to explain his disability, a young Mr. Glass is seen being flung right and left on a Tilt A Whirl, crushing his fragile bones. In reality, a Tilt A Whirl keeps you in place through centrifugal force. A more accurate depiction of side to side chaos would be on a Troika or Scrambler ride, which is what I think the director meant to show instead.
Corrected entry: In the first scene between David and Joseph, Joseph states it has been three weeks since the events of the previous film, Split. Throughout the rest of the film, it is stated by several characters that it has been nineteen years since the events of Unbreakable. This timeframe could not be possible, as the ending of Split makes it clear that it has been fifteen years since Mr. Glass has been incarcerated.