I double-checked. It does show a progress dialog when copying within Thunar but not if a file is dragged from Thunar to the desktop. If it is dragged to the Desktop shortcut in the side pane then it does.
-- No progress indicator on long file operations https://launchpad.net/bugs/80769 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs