My favorite instance of this is in a Good War.
In the story, they verify that the Horde’s siege weapons only have a range of a couple hundred yards.
Yet, in the very same story, those siege weapons are able to hit Teldrassil from the shore.
So either Teldrassil is canonical a couple football fields away from the mainland, or they just didn’t bother explaining how the Horde magically extended their firing range (and why they didn’t magically do so previously in the story where they had to move the siege weapons closer to the Ashenvale front)