help button leads to atlassian sign-in page
When I choose a commit and click in the zone to add a comment, a little (?) help button appears at the right of the page, left of the Preview button. When I click it, I'm thrown at a new tab page, showing the Log-In/Sign-Un page for Atlassian (url: https://confluence.atlassian.com/display/BITBUCKET/Marking+up+Comments ). That wasn't very helpful of course.