I have some custom fields that worked fine in localhost. When I deployed to the server, the custom fields names are showing up into the main content field. Text input is working but I don't know why the custom field names are showing up there. I am using the "Types" (http://wp-types.com/) plugin for managing the custom types and fields.
UPDATE: With the latest update the issue is solved. Sorry for posting a commercial plugin question, since I'm using the free version they don't let me write on the support forum.