Blank lines appearing in a CSV exported from Excel, only on 1 Mac, other Macs don't see them
If you look at your file with od -cx you will notice that every lines is terminated by the sequence: 0x0d 0x0a i.e. a carriage return followed by a newline.

There is most probably a difference between your 2 Sublime Text preferences in their way to manage the carriage return.

The next best explanation is a difference in extension you gave on your 2 text files which set Sublime Text in a different way to manage the character carriage return == 0x0d (coming from the last century type writers).