It happens to me several times. When I want to copy the words from wins to macOS,it often fails. I know how to set it, but it doesn't work.
Hello, As a possible solution, kindly reinstall Parallels Tools: in the top menu click Actions > Reinstall Parallels Tools, wait for the installation to finish, restart the virtual machine. If the issue persists, collect a technical report from this current build (right-click Parallels icon in Dock > Help > Send technical data > check "Attach screenshots..." > press Send Report) and provide us with the report's 9-digit ID.