heroku - ckeditor rails gem adds base url to assets -

i using ckeditor gem: rails 4 , assets_sync , heroku following url:

http://www.baseurl.com//mybucket.s3.amazonaws.com/assets/ckeditor/config-77c214941cb7b15940a497f28f333f30.js

while should be

//mybucket.s3.amazonaws.com/assets/ckeditor/config-77c214941cb7b15940a497f28f333f30.js

as defined in assets_host

config.action_controller.asset_host = "//#{s3_bucket}.s3.amazonaws.com"

i defined:

var ckeditor_basepath = "http://mybucket.s3.amazonaws.com/assets/ckeditor/";

but doesn't either.

why baseurl?

thanks lot help.

upgrading ckeditor gem version 4.0.11 fix issue.

GHI