I think the default behavior with respect to 'street2' filed title in theme_uc_shipping_address() is unfriendly.

I feel that this somehow feeds into the questionable behavior of the uc_texfield function (http://api.ubercart.org/api/function/uc_textfield/1.0) with respect to empty field titles, as used by uc_checkout_pane_delivery (and it's cousin pane_billing).

It is understandable that in most cases it is preferred that 'street2' line is rendered w/o a label. Yet, it is frustrating to try to understand why, when leaving the label for 'street2' under '/admin/store/settings/checkout/edit/fields', the field is not rendered (despite being enabled); and when the label explicitly set, the field is rendered without one.

I don't know how to best address this issue -- perhaps through documentation. Can't call this a bug, so perhaps this is a feature request with respect to documentation.