Thanks for checking. I need to see what’s going on with my system. I have Cubase 9.5 an 10 installed and drag and drop works correctly on 9.5 but not on 10.
Could you please check the audition tool in the audio editor window. 9 out of 10 times waveform and audio signal are out of sync (1 second delay), but this tool works perfectly on the audio channels of the arrange window.