Demonstration of meteor/meteor#769 changes.
Note: Has to be run with the Meteor changes in PR #8271.
git clone https://github.com/hwillson/meteor-issue-769.git
cd meteor-issue-769
[METEOR_CHECKOUT]/meteor npm install
[METEOR_CHECKOUT]/meteor
Click on the login/logout button; You will see a "LOGGING IN" or "LOGGING OUT" status message (also printed in the console).