Thank you for your reply! It is the same (store name) in account/forgotten/password and account/forgotten/loginname forms..
We thought these forms would pick up the store owner's name since admin/controller/pages/index/forgot_password.php was the only php found to have config_owner in the e-mail headers.
$mail->setSender($this->config->get('config_owner'));
To our surprise it did not, and still it was store_name in the From and in the Subject. The new password message body, however, had mentioned both- it said:
... A new password was requested from StoreName... <-- store_name placed here.
.... Your new password to OwnerName is .... <-config_owner placed here
It was the only reference to the store owner name observed but that was improper location to refer to the owner's name there
The documentation suggests the Store Owner name is to be in the "from" field of any emails sent from the site.
We tried cleaning the Configuration cache (System and store configurations) but that didn't help.
p.s.
Also, while testing it on behalf of a new test customer, we have noticed another issue with customer notifications: the welcome (registration confirmation) email actually has nobody in the From: field, as if PHP generated an email with the "From" missed or malformed in the headers. We'll report it in a new separate post.