Action "Send mail" translate to isn't translated when mail is sended.

It seems that the language-detection or language-string replacement isn't triggered when the "Send mail" action runs.

I've created a "After saving a new user account" rule with a "Send mail" action. The "Subject" and "Body" entries are translated. Both translations are detected and shown within the admin (both on Rule translation tab and Translation interface).

When a user creates a new account the rule is triggered and sends an email, but not in the correct language.
Within the rule, the translation settings are enabled. I've tested it with all available language-data-selector, but the mail subject and body still contains the initial rule values (the default english value).

Feel free to ask additional information.

--
Stefan

Using D7.22 with Rules 7.2.3 on a multilingual and multi-domain (Domain Access) setup.
Tested with i18n only and both i18n and entity_translation combined (without i18n_select to avoid translation/module conflicts).
Tested without any Domain Access events or conditions enabled within the rule.
Tested with all "Send mail" translation options, but only the initial rule-values are used (default: EN).
Cleared my cache between every test.
No PHP errors found in the logs.