about:blank opens in Chromium when ubuntu is no longer being authorized for a google account

[Martin Vysny]

Online Google account requires to be re-authenticated each 2 weeks or so. When Ubuntu starts and discovers that it is no longer authorized to access the Google accounts, the upper-right cogged wheel becomes red (which is okay), and chromium launches itself, opening previous tabs plus a new tab displaying about:blank. I have Chromium set up as the default browser.
Perhaps the following information is related to this bug? http://askubuntu.com/questions/296801/aboutblank-opens-in-chromium-when-i-type-into-the-dash

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: gnome-online-accounts 3.6.2-1ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-26.38-generic 3.8.13.2
Uname: Linux 3.8.0-26-generic i686
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: i386
Date: Fri Jul 12 20:20:50 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-02-28 (134 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-online-accounts
UpgradeStatus: Upgraded to raring on 2013-04-13 (90 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.