When using the Service Desk component "Create Ticket", notice the "Comment" field under the "Ticket Details" tab only shows information using a single line.
This will cause your comments to show on a single line when viewing from the Altiris Helpdesk side.
You should be able to fix this from the Workflow Designer by simply opening the "Create Ticket" component, "Ticket Details" tab. Click to edit the "Comments" and click on the on the "Source" button then "OK".
You will notice the [CR] squares will appear next to each line.
NOTE: If you edit the comments using the "Design" mode, you must click on "Source" and "OK", otherwise everything will display on a single line again.