Description:
I have saved previous versions of my document.  The help says I should be able to compare one of those to my present, open version, but this does not work.

Steps to Reproduce:
1.Edit document
2.Save document (or Save As)
3.Make changes in document
4.Choose Edit -> Track Changes -> Compare Document
5.Choose saved file to compare
6.Put in password when prompted and click "Open"



Actual Results:  
Nothing happens.  I am simply returned to the document I am editing.  The help on this says, "The contents of the selected document are marked as deletions in the dialog that opens."  No dialog opens.

Expected Results:
Some kind of dialog opens.  Help says, "If you want, you can insert the contents of the selected file into the current document by selecting the relevant deleted entries, clicking Reject, and then clicking Insert."  I don't fully know how this is supposed to work, since I haven't ever gotten it to work.


Reproducible: Always

User Profile Reset: No

Additional Info:
[Information automatically included from LibreOffice]
Locale: en-US
Module: TextDocument
[Information guessed from browser]
OS: Windows (All)
OS is 64bit: no
Builds ID: LibreOffice 5.2.7.2


User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.79 Safari/537.36