Anonymous questionnaires include non-anonymised user profile fields

[mwreichel]

If you use the anonymous questionnaire, some user profile fields are included in the export files.
Most of them are anonymised (e.g. fullname, username, id), but some further profile fields are included with the real data (e.g. institution, department).

At our university we use one of such fields also for the identification of users and that's the reason why it is problematic with us, but also in general it would be the best way to anonymise all profile fields in this case.

STEPS TO REPRODUCE

1. As a teacher:

• add a new questionnaire and set "Respondent type" to "anonymous"
• add a simple question (e.g. checkbox)

2. As a student (with different accounts):

• add some responses

3. As a teacher:

• go to "View all responses > Summary > Download"
• download the data of the responses

There's an admin setting ("downloadoptions") to be able to define which fields should be included in the export, but this is a general setting, and not specific for the anonymous mode.