The other link to another forum given also clearly shows the issue. If your using Adobe RGB with jpegs, the colors you are getting are way off - particularly noticeable in the hue of green grass and blue sky.
Interesting find when processing raw files using Raw Photo Processor on the Mac - you get 16 pixels more of actual image area in both the vertical and horizontal dimensions versus processing the exact same raw file in Adobe Camera Raw or even as compared to the ooc Jpeg. Not just an enlarged image of the same but new, additional image area!
So, instead of a native pixel size of 4288x2848, you get 4304x2864. Granted, it's not much but It's odd that Fuji and Adobe would have cropped out this additional image data.