Saving to .doc adds comments in right column

With libreoffice writer i save a file as a doc.

When I open the doc in word I see a series of comments in the write column.

sample comment block:

Normal 0

ALWAYS save as .odt - saving as .doc risks loss of formatting.

You have switched off the warning LO gives you when you don’t save as .odt!!! Switch it back on in Options.