Uploads & Base HRef!

I've got the edtior on a different subdomain to my main site (admin. and http://www.), but when adding images in the editor (i.e. upload them & select them) it appears to ignore the BaseHRef setting in the config file and treats them all as relative links to the admin. subdomain.

Shouldn't it preprend the image url with the base ref, at least for preview purposes, I wouldn't want the full url added into the html.

Any thoughts?