The Current Item Bow & Arrow in the Subscreen Editor is using the default names instead of the new names for the Bow and Arrow items.
Bow & Arrow uses default names
Wait... what type of "item name" element are you using in the subscreen? What's it currently displaying, and what ought it display?
I haven't had this problem, it works fine for me.
He's right; if you have the bow and arrows and more than 0 arrow ammo, the "Short Bow" or "Long Bow" part of the selected item name is hard-coded.
Fixed in the next build.