I attached the file issueresolved.vm, where I made the changes to view the custom field (Freetext with wiki renderer) 10150:
The custom field contains e.g. the following entry in wiki notation:
The way it is implemented right now renders the following output:
However, I want the output to be rendered ideally with the renderer configured for this field. If that does not work, I would also hardcode the wiki renderer. (As for my understanding, the wiki-text must somehow be translated to HTML, so that it is correctly inserted into the HTML eMail.