At first this looked like a trivial missing setAttribute call, but it turned out there were several issues: - first, the swapDocShells method wasn't called with the right parameter and 'this' values when reattaching. - then, the title was displayed correctly, but the window from which we were moving the docShell didn't close itself any more because of an exception when removing a webProgressListener (in socialErrorListener.remove). - and finally, when I wanted to test this, my test failed intermittently because the "got-chatbox-visibility" message is sometimes received once, sometimes twice (I guess the order in which the events related to destroying the old window, and loading the new one aren't fired in a deterministic order). I wonder if this (especially the swap.click() call in there) could have been causing other less visible intermittent failures.

(bug 886086 had changed browser_chat_tearoff.js since my last mozilla-central update.)

Comment on attachment 769667 [details] [diff] [review] Unbitrotted patch [Approval Request Comment] Bug caused by (feature/regressing bug #): bug 880911 User impact if declined: Some brokenness on detached and then reattached SocialAPI chat windows. The most visible one is the lack of title in the floating window's title bar. Testing completed (on m-c, etc.): Test included in the patch; landed on m-c a few days ago. Risk to taking this patch (and alternatives if risky): low. String or IDL/UUID changes made by this patch: none.

Comment on attachment 769667 [details] [diff] [review] Unbitrotted patch low risk patch that helps fix a user visible bug when user is trying to use the new feature (tearing-off of chat windows in Social). Approving on aurora.

https://hg.mozilla.org/releases/mozilla-aurora/rev/938ff744e73e The patch I landed on aurora is actually attachment 768990 [details] [diff] [review], as bug 886086 has not landed on aurora.

Samvedana, can you please verify this is fixed in Firefox 24 and 25?

User Agent :Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:25.0) Gecko/20130723 Firefox/25.0 Build ID: 20130723030205 Tested this on Windows 8 using latest nightly. I don't see any issues. Both windows were showing chat title. See attached screen shots.

User Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130723 Firefox/24.0 Build ID: 20130723004004 Tested this on Windows 8 using latest Aurora. I don't see any issues. Both windows were showing chat title.

I backed this out and re-landed it on beta so that I could more easily uplift the fixes for bug 886072 and bug 886086. There should be no functional change - it's just reordering a couple commits. https://hg.mozilla.org/releases/mozilla-beta/rev/8fb54e7478ef