Wands can only target the player, or living and/or dead monsters. This makes some wands... like the stony wand and the handy wand less useful. surely this is not intended to happen.
Ruigi, you've been around for a while and this problem has been around for at least as long as I have and you are just now noticing it? Wow! That's okay, it took me around 400 hundred hours of play before finding out I could dual wield shields.
Don't worry, it took me just as long to learn that I don't need Dual Wield to dual shield I believe this bug is also present on Mac OSX Lion/Snow Leopard and the various Linux OSes. "Fixing" this "bug" would be quite nice.