Report User Filters - Date locale not respected

Report User Filters - Date locale not respected

Hi
I've added a date range as a user filter to a report. The calendar drop-down works fine, but if I type in the date the system is forcing interpretation to US date format, despite the application settings being set for European (e.g. if I type in range 1/9/2010 to 30/8/2011 the first is interpreted as 9th Jan and the second is not resolved).

Am I missing something or is this a bug that needs fixing?

(App is Pupil Assessments and report is Pupil Progress. Support access is on)