Emails with large images when previewed can show as truncated although the email messages are correct as delivered. This problem is solely with the Preview Email function.
Steps to Reproduce
Open any incident.
Click the More options button.
Copy and paste an image with a large height and then type some text below it.
In the sys_email list, open the submitted record and click Preview HTML Body.
Note that the text below the image is not displayed.
This issue is cosmetic and does not affect sent email when sent to an email client.
Related Problem: PRB756728