Bug introduced in 10.3 or earlier and persisting through 11.3
obj = ResourceObject["CIFAR-10"];
trainingData = ResourceData[obj, "TrainingData"];
imgTest = trainingData[[29562]][[1]]
ImageKeypoints[ImageResize[imgTest, 256], "Descriptor"][[112]]
Since this causes a bug of my post codes[ClusteringCompoment of codebook]...I wonder is this a bug of ImageKeypoint or it's a feature?
Background: the bag of words example in the HelpPage of ImageKeypoint.