980255 - Unable to manage sync account when browser.preferences.inContent is "true"(Preferences opened in tab)

Status: RESOLVED DUPLICATE of bug 967674

(Firefox :: Sync, defect)

Description

[u421692]

Attachment: Screenshot

Environment:
Build: Nightly 30.0a1 (2014-03-05)
OS: ubuntu 12.04 LTS

Steps to reproduce:
1. Go to about:config to set browser.preferences.inContent to true(so the Preferences is opened in a tab and not in a new window)
2. Open Preferences -> Sync

Expected result:
The new sync UI should be visible and user can Sign in or disconnect from the account.

Actual result:
The UI looks like the old sync UI, and have the account logged. I can not disconnect or manage in any way my account until I set the browser.preferences.inContent back to "false". 

Note: Please see the attached screenshot.