As of the current Hotfix for Retail Pro version 8, you can go into Style View and enter a new item, then select PRINT TAGS before selecting SAVE at the top of the screen. Hitting Print Tags before Save doesn't seem like too big of a deal.
The result, though, is that tags print (appearing to be just fine) with the barcode of Item# 000000. That's bad. So, make sure that when you're entering items in Style View you select SAVE at the top before PRINT TAGS.
This issue has been logged with RTI.