There's a technical Bulletin from August 26th 2010 that explains that as of BBSA 8.0 SP5 Patch 1 and on the properties have changed to use the UDDI settings. You can find this document in the product documentation section in the support site.
When you say that it works with HTTPS, what exactly do you mean? can you provide a screen shot of the settings in BBSA that you used? The document also provides instructions on how to configure for HTTP usage.