When a content type has an image or file field that is set to allow more than one image/file ckeditor disappears whether you use ckeditor or wysiwig module as the front end for ckeditor. If no image/file is attached to the node all looks normal. But as soon as you upload an image/file ckeditor disappears.
If you add an image or file field to a content type and set it to accept only one image/file ckeditor works as intended. This is true even after uploading an image or file.
Support requests have been posted in the ckeditor issue queue about this problem occurring with image and media fields. See #1972730: Using media file selector widget makes ckeditor disappear and #1504696: Integration with Media 2.x.
Because this happens with both ckeditor and wysiwyg modules I suspect the problem is elsewhere, but I have not been able to track it down.