Tests summary screen always shows last 25 builds

Changing the period on the View Tests Summary screen does nothing. It always comes up as showing last 25 builds, no matter what is selected from the drop down.

Eg https://bamboo.extranet.atlassian.com/build/setResultsFitler.action?returnUrl=%2Fbuild%2FviewTestsSummary.action%3FbuildKey%3DCONFFUNC-T5PG&buildKey=CONFFUNC-T5PG&filterController.selectedFilterKey=LAST_90_DAYS redirects to https://bamboo.extranet.atlassian.com/build/viewTestsSummary.action?buildKey=CONFFUNC-T5PG