When you go from a filter to an issue and then click on a sub-task, you are not able to use the back option on the browser.

Steps to Reproduce

1. Create an issue and a sub-task.
2. Create a filter that displays the issue.
3. Click on the issue on the filter results to open the issue. Notice that the URL will have ?filter=<filterID> appended to the URL.
4. While on the issue, click on the sub-task to open it.
5. Now try to go back to the issue by using the back button.

Expected Results

You go back to the issue.

Actual Results

The URL in the browser updates, but you are not taken to the previous page.

Additional notes

Reproducible on IE, Firefox, Safari