Cannot change favicon

Summary

In Confluence 6.7.0, when attempting to change favicon to anything other than the Confluence logo, the image is uploaded but does not change in the browser tab. After upload, the favicon setting in Confluence shows the uploaded image, but the tab still only displays the Confluence logo.

Steps to Reproduce

1. Navigate to Site Logo and Favicon in the Admin Console
2. Select "Choose File" from Upload from File

Expected Results

Icon in the browser changes to the image you uploaded

Actual Results

The Icon in the browser tab never changes from the Confluence Logo

Notes

Tested in Confluence 6.6 and the issue does not exist
Site Logo and title still functional

Workaround

1. Shutdown Confluence
2. Update <confluence_install>/confluence/images/brand-images/favicons/fav-confluence.ico with your custom favicon.ico
3. Update <confluence_install>/confluence/johnson/fav-confluence.ico with your custom favicon.ico
4. Delete the contents of <confluence_install>/work/* (do not remove the folder)
5. Delete the contents of <confluence_install>/temp/* (do not remove the folder)
6. Startup Confluence and the favicon.ico should show on the Browser tab