Backspace doesn't work when entering a name in the dog tag GUI.

Since the tags do not reset any previous name when used, and there's no way to cancel their use, this means that once you right click a dog with a dog tag, you can never undo any characters you type.

Backspace should be enabled, and also hitting escape (or a possible added "cancel" button) while editing should cancel the use of the dog tag and leave the tag unused.