I'm have the same issue on MacOS 12.1 with Cyberduck v8.2.1 when using Google Cloud Storage. There are two actions bound to the same key combination (⇧⌘C): Copy HTTPS URL and Copy Google Storage URL. I imagine this conflicting key mapping is the source of the problem. And there is no way for the user to rebind key mappings which, imo, would be the easy way to resolve this. I don't have this problem with other services that I use (AWS S3, SSH, Google Drive) because there is only one option bound to ⇧⌘C, usually Copy {Service Name} URL. Which, again, would be nice to rebind since most of the time I'd rather copy an HTTP URL than an SFTP or S3 URL.