Hi guys 

i get a weird issue with digest email template 

When i click on the body of the template, it will not show after that and we will get a blank body even if the body_html is still there

When I create new test DB I click on the preview of the template I get the body, but when I click on the html body (Without doing any changes) I see a blank body in preview after that 

PLEASE HOW CAN I FIX MY ISSUE IN MY PRODUCTION ENV ?