Thanks for taking the time to report this bug. I can confirm this running Hardy Alpha.
I opened two Nautilus windows, and attempted to paste a file from the desktop with the same name as a file in Nautilus window 1 into Nautilus window 1. As expected a dialog appears asking if I want to replace the file already in that directory. Nautilus window 2 could be brought into focus, but remained unresponsive until the dialog regarding Nautilus window 1 had been resolved.
Thanks for taking the time to report this bug. I can confirm this running Hardy Alpha.
I opened two Nautilus windows, and attempted to paste a file from the desktop with the same name as a file in Nautilus window 1 into Nautilus window 1. As expected a dialog appears asking if I want to replace the file already in that directory. Nautilus window 2 could be brought into focus, but remained unresponsive until the dialog regarding Nautilus window 1 had been resolved.