1.509.4, 1.536 and 1.533-SNAPSHOT from https://ci.jenkins-ci.org/job/jenkins_lts_branch/119/
Firefox 24.0 on OS X (newly created profile, without Greasemonkey etc.)
1. Select to create a new freestyle job named 'foo'
2. On the job configuration page, click 'Apply'
3. Click 'Save'
The job page will unexpectedly open in a new browser tab, while the config page is still open in the existing tab.