Libreoffice converted file overlaps text

Hello All,

We are using Libreoffice with Liferay in Ubuntu 14.04. We observed one issue with the document conversion which is, the converted PDF/word file overlaps the text. Its kind of a header. Not sure whether the fonts getting changed or something else is happening.

The .ODT file opens perfectly in my laptop where i have installed libreoffice 5.4 and an able to export the same .ODT file to PDF or WORD file without any overlap issues. When i convert the file in Ubuntu, it creates issues. The LO version installed in Ubuntu is
if anyone knows the fix, please advise.

Thanks in advance,