I found a hint of what is going on. On my Mac I could read and write your file without issue but I found one strange thing.
If you open the file in a editor you find these strange line breaks or so it seems. If you export this and read it back (with word) you find a strange little dot.
If you try to identify this with this
You get a small grey dot which results in
U+00B7 : MIDDLE DOT {midpoint (in typography); Georgian comma; Greek middle dot (ano teleia)}
U+200B : ZERO WIDTH SPACE [ZWSP]
So it seems you might have some strange characters in your data that some systems might struggle to process. You might have to investigate further of clean your data.