Steps to reproduce: 1. Open Firefox. 2. Click on the Hello button. 3. Click Sign in. 4. Close the rest of the tabs and log in with a Firefox account. Expected Result: The user is properly signed in. Actual Result: Signing into FxA from Loop closes the browser if it's the single tab displayed. Notes: This issue is reproducing on Windows 7 64-bit, Windows 8.1 64-bit, Mac OS X 10.8.5 and Ubuntu 12.04 32-bit. Reproduced on: Firefox 35 beta 2, build ID: 20141208150535 Latest Nightly, build ID: 20141209030205
This is likely an edge-case as I don't anticipate many people will close all tabs between initiating the sign in process and successfully logging in with FxA. For this reason I don't think this needs to block but it's an interesting bug nonetheless.