7.9.5 No Detailview in email module with some emails.

Hello

With some email when I click to see a detailview i 've got a blank page but I have the menu.
No error in logs (suitecrm logs and webserver log)
Thanks

SuiteCRM Version used: 7.9.5
Browser name and version Firefox 55.03
Environment name and version (e.g. MySQL, PHP 7): Mysql PHP 7.1
Operating System and version (e.g Ubuntu 16.04): Windows 7

After more investigations : some “html” in the email body make trouble for example :

 <o:p></o:p>

, or

 <a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1"
          height="1" moz-do-not-send="true"> </a>

Do you know how can-i fix this problem ? Some code to add in suite crm ?

Thnks