Steps to reproduce

1. Create a new page
2. Add a table with a couple of cells (though the issue can be reproduced with just 1 cell as well)
3. In each cell, add a large amount of text (e.g. several paragraphs of content)
4. Save page
5. Tools > Export to Word

Expected result

The resulting Word doc will contain all the text and viewable by the user

Actual result

When viewing the resulting Word doc, any large body of text within a table cell that exceeds the size of one Word page will be truncated and not viewable

Other info

If the Word document is exploded and the underlying XML file examined, the full body of the text is actually all there, just not viewable through Word.

Example of the exported page using Confluence 7.7.4

Workaround

Export to PDF and then convert the PDF file to Word will work for getting the file converted to Word. This requires the use of a third-party tool to convert PDF to Word.