"Edit in Office" fails to open file on the second attempt on IE10 and IE11

On IE10 or IE11, "Edit in Office" opens the file in Office correctly the first time you click on the option. Then you save or close the Office document and back on Confluence, clicking again on "Edit in Office" nothing happens.

In order to use the functionality again the IE window has to be closed and reopened.

Environment:

• Windows 7
• MS Office 2010 (no compatibility pack is installed)
• Java, via Programs and Features versions are :
  • Java 7 Update 71 (64bit) v7.0.710
  • Java SE Development Kit 7 Update 71 (64bit) v1.7.0.710
  • Java 6 Update 21 v6.0.210
  • Java 6 Update 39 (64bit) v6.0.390
• Browsers
  • IE11
  • IE10

Steps to Reproduce:

1. Add Word 2010 document to a page. (a one sentence document would do)
2. Click on "Edit in Office" and after entering your Confluence credentials the file will be opened in Office Word 2010
3. Save then Close the document in Word.
4. Click on "Edit in Office".

Expected Result: The document is once again opened in Office Word 2010
Actual Result: Nothing happens. No errors displayed on screen.

Confluence logs an error: (full confluence-log.txt attached)

 2015-06-19 11:38:01,787 ERROR [TP-Processor36] [extra.webdav.servlet.ConfluenceWebdavServlet] service Unexpected error
  -- url: /wiki/plugins/servlet/confluence/editinword/13139974/attachments/SimpleWordDocument.docx | userName: user-name
 org.apache.jackrabbit.webdav.DavException: Precondition Failed
 	at org.apache.jackrabbit.webdav.lock.SerializableLockManager.releaseLock(SerializableLockManager.java:185)
 	at com.atlassian.confluence.extra.webdav.resource.AbstractConfluenceResource.unlock(AbstractConfluenceResource.java:416)
 	at org.apache.jackrabbit.webdav.server.AbstractWebdavServlet.doUnlock(AbstractWebdavServlet.java:709)

but the problem is when clicking the option a second time. The first time it opens correctly which proves that the Office Connector Prerequisites are met.

IE Private Mode exhibits the exact same behaviour.

Workaround:
Close Internet Explorer and reopen it again to use the "Edit in Office" functionality again.