We noticed the EDITOR_DECISION_INITIAL_DECLINE email template doesn’t exist at all in either Spanish or Portuguese. Is this just a matter of adding it to the email templates XML on the Github OJS repository or is there something else that needs doing?
Looks like a problem of missing email template translation. Locally on your OJS you can add translation in the email templates editor. But adding it to the OJS github would ensure the template is available with next OJS versions.