We have used the template questionnaire personality test What's your personality type http://www.bbc.co.uk/science/humanbody/mind/surveys/whatamilike/static_quiz.shtml to test the feature.
The admin user has completed one survey.
When viewing the "your response" and "all responses" - individual response we can see planner/spontaneous as 73% | 27%.
However on the "all responses - summary" screen, we see planner/spontaneous as 11% | 27%.
we are testing against the latest MOODLE_26_STABLE branch from git