JPEG decoder artifact bug
The attached Output.pdf renders the image differently in AcrobatPro to non-Adobe PDF readers (eg, Safari). There is a faint light grey line, about 13 pixels wide, down the right edge. If you "Browse Internal PDF Structure" you can see the grey pixels as fe rather than ff in the JPEG stream, so it seems as though the PDF JPEG decoder has an off-by-one error.
I've also attached Original.jpg which shows what the image should look like. It doesn't have the grey line, as you can see by loading it into, eg, Photoshop. If you convert it to a PDF using some method that does not recompress the image you can reproduce the PDF with it. (I used https://www.convert-jpg-to-pdf.net/.)
I'm using Acrobat Pro DC, version 19.12.20040.345140, on a MacBook Pro running Mojave 10.14.5.