Hopefully this is the correct place to post this now that the UserVoice website has been shut down.
The latest versions of Remote Desktop for Mac have introduced a regular freezing problem when copying anything within a workspace. This is particularly bad in the Remote Desktop Beta, which we've currently abandoned, having used this for the last few years, and occurs quite regularly in the App Store version.
Force quitting and then relaunching does at least retain the workspace, but until the force quit there is no interaction, just the blue spinning circle.
This is on a 16Gb M1 MacBook Pro connecting to a Windows 2019 RemoteApp server.