When downloading a Word document that has been edited in Docs, the document table will contain an additional column on the right end side of the table.
Steps to reproduce the issue:
1) Create a file from MS Word (2016 or the latest version) at the local client
2) Manually adjust the width of the unaligned columns.
3) Upload a file to docs and edit it.
4) Delete a row in the table.
5) Download the edited file from Docs and Files.
Result: There is an extra column in both downloaded files.