Can't remove line enters from styled email when forwarding

**Describe the bug**
When you forward an email and try to edit the email content, some lines can't be deleted; you can delete the content but not the line enter

**To Reproduce**
Steps to reproduce the behavior:
1. Forward a styled email
2. try deleting all the line rows

**Expected behavior**
It's expected that every line enter will be removed as well as the content

**Device and System information (please complete the following information):**
- Device: iPhone X