Description:
We can add digital signatures to odt files but are unable to add digital signatures to docx files. Some require files sent in the docx format; not PDF or ODT. Therefore, being able to add a digital signature to these files is important.

Steps to Reproduce:
Click Digital Signatures
Sign Document
No saved PGP keys are in the list. No way to sign the DOCX file. 
If file is in ODT, two saved keys are in the list.

Actual Results:
Cannot sign DOCX documents

Expected Results:
Sign DOCX document.


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
Sign the DOCX document with an existing, or recently created, key