On the ‘current’ screen, any auction listed does not update its ‘price total with P&P’ to the current bid value.
When the auction is complete, it shows correctly with the final price.

The “Current” column only shows the current bid amount. “Total” shows current bid + shipping. They work fine for me in all tabs so I’d check that the one you want (“Total”) is the one displayed. If you have “Total” displayed then it’s likely to be a synchronisation issue. JBw does not update auctions in real-time. It syncs at startup with increasingly frequently updates as the end date/time approaches. You can force the issue by selecting the “Servers” -> “Update Auctions” menu item.