Compared to things I've seen in other MMOs, this is literally less than nothing.

For a really bad example, go look at the rooftops of Silvermoon City on WoW. They don't exist. Most of the city literally has no top, because you were never meant to see it anyway. There are ways to get up there, especially with a demon hunter, so you can see just how unfinished the area is. The devs have outright stated that they don't plan to fix it because Silvermoon is basically a dead zone anyway, aside from beginner blood elves, so it's not worth the time.

But, much like this one odd tree, it's something you'd never notice unless you went out of your way looking for it.