I find it funny how Cursed Child is being denounced as canon due to “plot holes.” Yet the story had no real plotholes at all? Harry’s hurting scar? Easily a warning of Voldie’s possible return due to time warping. Voldie having a kid? It was never disproven in the original story, and can fit if you take time to think on it. Cedric going bad is not a plothole, it’s an alternative reality. The time turner is a NEW invention that goes back actual YEARS instead of hours. It’s not a plothole.