Yes, this is a bug. I have logged it in our system to have it corrected in a future update.
in the mean time, you can hide the sku manually by going to Design -> Advanced and entering the following CSS:
.skus { display: none; }
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.