Opening story in DONE will close the sprint

Steps to reproduce:

• Open the DONE lane

• Go back a few months and click the disclosure triangle on a sprint to see the stories that were accepted that week. Note the dates for the sprint so you can find it later.

• Click on a story title to open that story. It takes a second or two for that to work.

• As soon as it opens, you see it flash and then suddenly the view is back to the bottom of the DONE lane, and that Sprint is closed.

• If you scroll back up to the correct sprint (find the dates you noted above), then open the Sprint, you will see that the Story inside is open.

Expectation:

I expected the Sprint to stay open so I could keep looking at the Story I was trying to open.