Hi
Not sure how to report this or if this is a bug at all, when an email is sent through the contact us form or any email sent. the images will show up if the site is installed in ROOT.
if the site is installed into a folder off the root the images will not show...
this maybe a set up issue by me but I have tested this on a live site to double check...
viewing the source of the email the code shown appears like this.
Hope that is enough explanation