Thumbnail of Contact is not shown properly on Harmattan

QContactThumbnail c++ api and Contact QML element does not return thumbnail of the conatact properly on Harmattan. Same attached applications works fine on Symbian.

Steps to reproduce:
1. Create a contact by "native" Contact application and set thumbnail image to it.
2. Execute and compile attached qmlcontacts and samplephonebook example application.

Expected result:

• Both apps should show thumbnail image properly.

Actual result:

• samplephonebook does not show thumbnail image at all and qmlcontacts app shows default image instead of correct thumbnail image.