Indent not functional in Profile Registration

I have a vocabulary with approximately 900 terms with 3 tiers. (regions/counties/cities and villages)When I create the selection field in User Administration/Profiles, and select the vocabulary, the dashes are noted in the greyed-out box about. However, when I view it as a new user (in another browser) to register, it is a flat list (in the same order as the tiered taxonomy), with no indent. So in admin user, I go back into this vocabulary field in Profile, it is flat, with no indents or dashes...

Thanks for your time!
Dave