Text not visible when saved with Writer in .doc format and opened in MS Office 2013

when i type a single character or line without hitting enter(return key) and save the file in Writer in .doc format and open the same file in MS Office 2013, the document appears to be blank.

also, if i type one/few lines and the type the last line of the text/line and do not hit enter(return key) and save the file in .doc format and open in MS Office 2013, the last line doesnt appear.

probably a bug?

[edit: removed redundant tag]

This appears to be bug fdo#72242.