As the summary says. Running that seems to result in a bunch of work being done (as the device heats up and stops responding in as timely a manner), but no window is shown. This completely breaks many common interactions.

A bisection says this was caused by patch 1 from bug 1113086.

It looks like this is happening because the interface has changed and Gaia system hasn't been updated. Specifically, an exception is happening in gaia/apps/system/js/app_window.js:865: [JavaScript Error: "InvalidNodeTypeError: The supplied node is incorrect or has an incorrect ancestor for this operation." {file: "app://system.gaiamobile.org/js/app_window.js" line: 865}]

[Blocking Requested - why for this release]:

Sorry, forgot to fill out reason... Kind of obvious though - you can't open new windows with this regression. Clicking on any link that opens in a new window, unless it's a remote window, results in failure.

I might've been hasty changing the component - it doesn't seem that the API has changed, just that this line now fails in the situation of opening a new non-remote window: https://github.com/mozilla-b2g/gaia/blob/master/apps/system/js/app_window.js#L855 (var audioChannels = this.browser.element.allowedAudioChannels;)

I don't know what the right fix for this should be, but here's a quick work-around for anyone else whose work this is blocking: https://gist.github.com/Cwiiis/e3279ebf6429cbd56027

Alastor, is this a duplicate? You already fix this, correct?

Yes, it's the same issue. I would update the patch to fix it.

I reported similar problem in bug 1238511. So I think it's not resolved.

I think that is different issue, it should be discussed in another bug.