There was no problem some months ago but suddenly "Paste" stop working in CodeMirror in Google Chrome. Both "Ctrl+V", "Shift+Insert" and right-click -> "Paste" do nothing.
It's not a bug in my code because even at demo page at
http://codemirror.net/jstest.html
it doesn't work.
Update Google Chrome. Everything works in the new version - Google Chrome 8.0.552.0 dev