New links around images in the WYSIWYG editor are lost on save

Steps to reproduce:

1. Edit the sandbox in the WYSIWYG editor
2. Click on the logo image and add a link (e.g., to Sandbox2)
3. Save

Expected result:

The image is a link to Sandbox2.

Actual result:

There is no link. In the wiki source, the syntax is [[image:XWikiLogo.png]](% title="Click and drag to resize" %)​.