Steps to Reproduce

1. Perform an advanced search, viewing the results in the List View
2. Click on an issue (takes you to the issue)
3. Click back on the browser button (takes you back to the issue search)

Observed result
The "Search issues" and "Query Profile" buttons are duplicated. With each repeat of the "click into an issue - click back button" cycle, the page gets more broken - eventually becoming unresponsive.

Expected result
Search interface doesn't change.

Additional notes

• If a user doesn't have access to view the Query Profile, the bug does not occur
• Occurring on both Mac & PC
• Occurring on both Google Chrome & Mozilla Firefox
• Screenshot is attached