Calendar export page does not set page layout correctly

For 2.5 and master perform the below tests using the standard and clean theme. Test 1 Visit your Moodle site front page. Click on the calendar date on the calendar block. Click 'Export calendar' button. Ensure you see the appropriate site navigation/menu. Test 2 Visit a course and add the calendar block if it is not already there. Click on the calendar date on the calendar block. Click 'Export calendar' button. Ensure you see the appropriate course navigation/menu.