Setup: the local Walmart just replaced all their cart corrals.
What’s wrong with this picture?
As nearly as I can tell, the installers permuted the railings; a simple three bit rotate-left-by-one operation would fix it.
Not much to my surprise, every single corral looks like that; either the instructions were wrong or, more likely, the installers never read the instructions. Obviously, they didn’t think about the results and nobody ever checked the final result.
Prediction: the corrals will look like that forevermore…