"Yes or No" custom fields not displayed correctly in table

Custom fields of data type "Yes or No" are not displayed properly in a table. The first record is displayed correctly with "Yes" or "No" in that column, but all subsequent records are displayed as "1" or "0" instead of "Yes" or "No".

This applies to a custom field group, assigned to apply to individuals, multiple records allowed, displayed as tab + table.

I noticed this on my system CiviCRM 4.6.8 on Joomla 3.4.4 some time after upgrading from 4.6.5. My recollection is that it was ok in 4.6.5. I checked on 4.6.0 at joomla.demo.civicrm.org, which works properly. I also checked on the 4.6.9 + Drupal demo and on that version, like my 4.6.8, it has the problem.

Screenshot from 4.6.9 demo (Drupal)