popup images are broken if using TinyMCE

If you're using TinyMCE and you use the Media option to add an image inline in the editor, and you want it to be a popup, the image url for the popup doesn't add the leading / in front of images. The issue then is you end up with http://yoursite.com/blog/images instead of http://yoursite.com/images and when the popup is triggered the image is missing. Because tinymce strips stuff, you literally have to disable it to add back the leading / so I guess it's a bug in tinymce? I'd love to know a way to fix this. It's not a high priority, and I think I'm going to switch my client to your composer instead, but it's certainly something that should be addressed.

thanks!