I think this is a bug on your site.
I tried to edit an image path from content placeholder. <img src="image/image.gif"/> It works perfect when the .aspx is just under first level such as ~/Contact,aspx. If I am editing images in ~/Contact/Feedback.aspx file, it always shows path /Sitefinity/admin/image/image.gif. I always have to give an absolute path which is http://domainname/image/image.gif
. When I upgrade to RC2, it took me several days to fix all the links. Please send me a work around. Thank you for much.