When I use a hairline border on a cell (xlHairline), and export the spreadsheet as PDF (using "save as" or "print", makes no difference), it does not look like a hairline in the PDF, but like a weird dotted line.
I used VBA to create the borders, to make sure I really get what I want:
Range("B2").Borders.LineStyle = XlLineStyle.xlContinuous
Range("B2").Borders.Weight = XlBorderWeight.xlHairline
This is how the PDF looks when exported with Excel 2016 on Mac:
Here is how the PDF looks when exported with Excel 2010 on Windows:
Is there any workaround for this, so that I get a proper PDF on Mac?