From the administration backend, if we create an article and add and image to the image attribute, it will become impossible to remove the added image.

Steps to reproduce:

Start from an eZ Publish 5.3 or 5.3.1 environment.

1. Log in to the administration backend
2. Create a new article in any location you wish
3. Add an image to the "image" attribute field
4. Publish your article
5. Edit your article again
6. On the image you just added, click on the "Remove image" button
7. Re-publish your article

The image will still remain, which is wrong.