Content aware crop, to me works just like standard content aware, net it's can't handle complex patterns period. Same issues of not really being able to create a new image without replication. The larger the swatch the worst the issue. Most of the demo's on-line I have seen, you can see large pieces of the image just being duplicated. I had hoped that Adobe would possibly reworked or improve the Content aware algorithm, but it seem like is the same.
Just like the failure of Content aware scale, which was introduced in a previous release. Attempting to grow an image with Content aware scale even an inch, created all types of image abnormalities within the file.
Paul C