Starring a diff appears to work but actually fails

Steps to reproduce
1. Go to https://atlaseye-qa.atlassian.com/atlaseye/browse/atlassian/performance/fisheye/performance-metrics/src/test/java/com/atlassian/fisheye/performance/TestJmeterPerformanceScriptsAreWorking.java?r1=97946&r2=98971&u=3
2. Click on the star

Expected

• The star turns yellow (without a page-pop)
• The item appears in your star menu at the top
• When you refresh the page the star is still yellow

Actual

• The star turns yellow (without a page-pop)