Images in Wysiwyg aren't rendered properly under "Thumbnail image" select list

Problem/Motivation

When creating or editing a node, and adding inline images in Wysiwyg, those images don't get rendered properly under "Thumbnail image" select list.

Steps to reproduce

• Install the module
• Enable it for nodes
• Add a body field and enable inline images
• Add inline images in wysiwyg
• Save
• Edit again to choose a "Thumbnail image" that e.g: facebook will choose when sharing content
• You will see that images aren't being rendered

Proposed resolution

Fix the issue.