Using Mac OS X 12.6.8 and Remote Desktop 10.9.2. Beginning two versions back (10.9.0?), copy and paste works for a while after launching RD, but it eventually fails when copying from the remote mach...
This problem occurs even when copying lines of text from Visual Studio Code, so I don't think it's necessarily related to any fonts used.
I am utilizing v10.9.7. Quitting Remote Desktop completely usually resolves the spinning beachball.