Missing spaces between words when saving ODT as DOCX

I am using LibreOffice 4.3 on Kubuntu 14.04.

After saving my Writer ODT files in Microsoft Word format (DOCX), I always have the problem that some (not all) spaces between words are missing when the files are viewed on a Windows machine.

I guess it might have something to do with the difference between the way Linux and Windows treat line breaks.

Is there anything I can do about it?

Given that the original .doc versions of Word are no longer supported, and .docx is (apparently) an open format, it would be useful for resolution of this to be a priority.

It remains a problem in LibreOffice 5.

Hallo

I guess it might have something to do with the difference between the way Linux and Windows treat line breaks.

Surely not – but it has to do with sophisticated - ( .docx ) - format-specifications – if you need to switch to other than .odt use .doc as Export-format