Just to complement the entire information.
In my scenario was necessary to add this change into the RichEditor.cshtml because i'm using images in some campaign's
from
//"relative_urls" required by jbimages plugin to be set to "false"
relative_urls: false
to
//"relative_urls" required by jbimages plugin to be set to "false"
relative_urls: false
remove_script_host: false