In debug mode Email Notification's contents are properly in MDG contents subject line and some line of Body missing

Hi Techies,

In debug mode email notification generates properly with correct subject line and body, but while trying to create ----> approver---> send for revised --> then again requester (resubmit)--> approved (approver), after completion of this cycle,  then email notification generates but subject line and some of the lines in body are missing.

Please help out with suggestion.