Why is an extra space added in HTML standard text when appended to incident response?
Standard Text / Incident Response Emails
The spacing used in the standard text entries is by design. There were other issues with the display of the various typefaces and other options available for text display, and adding this space corrected those problems, and therefore, it was intentionally made part of the product.
An alternative to this is to manually remove the spacing from the response thread prior to sending.