Select unused addresses when copying receiving address. We don't use wallet.get_balance as that is deceptive (if you sent a tx to yourself or old used addresses can have a 0 balance) and get_history seems a bit much (to check the activity of an address, we'd have to filter many addresses). This is a nice reasonable compromise.

lib/gui_lite.py

@@ -443,6 +443,8 @@ class MiniActuator:
     def copy_address(self, receive_popup):
         addrs = [addr for addr in self.wallet.all_addresses()
                  if not self.wallet.is_change(addr)]
+        # Select most recent addresses from gap limit
+        addrs = addrs[-self.wallet.gap_limit:]
         copied_address = random.choice(addrs)
         qApp.clipboard().setText(copied_address)
         receive_popup.setup(copied_address)