HTML signature is escaped in profile editing and mailing

On a fresh CiviCRM 4.7 installation, I've set an HTML signature for a contact using CKEditor. When I try to modify the contact, the HTML signature contains the escaped HTML code. The same appends when creating a mailing with {contact.signature} inside. However, the signature displays well for simple emails.

This issue does not happen in 4.6. I've compared both databases and discovered that the HTML code stored in civicrm_email.signature_html is escaped in 4.7 but not in 4.6. Also, for simple emails, the signature is retrieved from an API call - I presume it unescapes the response.

Is it intentional to store an escaped HTML signature in the database, is it a mistakes in CKEditor configuration or something else?

Thanks in advance!