I'm sorry but I can't reproduce this issue with current versions of WP e-Commerce and WP. Could you please check if you're running the latest versions and if not, tell me which version you run?
I just tested it on:
WP e-Commerce 220.127.116.11
Actually, versions of WP and WP-Lister should not make any difference. But if you're still running WP e-Commerce 3.7.x that might cause this issue...
I already sent you a screenshot of the menu in my WP e-Commerce dev site. On hat screenshot both menu items were visible as they are supposed to be.
If this can be tracked down to WP e-Commerce 3.7.x it would be easy to fix.
thanks for your help,