Olaf’s Frozen Adventure running 21 minutes long (as a preview for Pixar's Coco) has been pulled from theaters. When parents brought their kids to the theater they were being "blindsided" as one movie-goer called by a movie they "didn't pay to see".
Olaf’s Frozen Adventure is the length of an episode of network TV, which is not what most people expected, but helps explain the strangeness of its placement before Coco.
More on the story: HERE