While drag&drop involves mouse only, copy&paste generally needs both keyboard and mouse. I don't see how is d&d the hard way.
Also, please note this is not a feature request, but more like a bug report. Even if it is the hard way, it was previously working, and the recent changes broke it. So unless this feature was removed intentionally, I am looking for a fix of it, rather than a suggestion of an alternate.
Thanks for your input anyway.