The file https://www.clemson.edu/procurement/documents/travel/TravelReimbursementQuickGuide.docx opens in Draw instead of Writer both from within LibreOffice via the File -> Open... dialog and from the command line.  Then the file is displayed on a portrait oriented Draw page but it appears that the contents are landscape oriented with text running off the sides of the Draw page.

I first noticed this behavior in LibreOfficeDev 5.2 which produces no error when opening the file at the command line.  LibreOffice 5.1 does produce an error:

$ /opt/libreoffice5.1/program/swriter TravelReimbursementQuickGuide.docx 
:1: parser error : Document is empty
%PDF-1.3
^
:1: parser error : Document is empty
%PDF-1.3
^
:1: parser error : Document is empty
%PDF-1.3
^
$

Version: 5.1.1.2
Build ID: fe4d9e69c82c6ee6db3c27cd5e2d47558afa80ac
CPU Threads: 4; OS Version: Linux 3.13; UI Render: default;
Locale: en-US (en_US.UTF-8)
OS:  Kubuntu 14.04.4

Version: 5.2.0.0.beta2
Build ID: ae12e6f168ba39f137fc110174a37c482ce68fa4
CPU Threads: 4; OS Version: Linux 3.13; UI Render: default;
Locale: en-US (en_US.UTF-8)
OS:  Kubuntu 14.04.4