Hi, thanks a lot for this tool!
Maybe i doing something wrong but it's looks like the clipboard is only updating if i don't fill the onCopy param.
I tested on a basic example like:
<div>
<p>Click the button to copy some text</p>
<ReactZeroClipboard text="Hello, world!" onCopy={function(){}}>
<button>Copy</button>
</ReactZeroClipboard>
</div>
with react@0.13.3