Not an audio hardware issue - I’ve used my iMac on-board sound card, a FiiO E10 external DAC, and my Zoom L-12. Every one has the same issue, but not all the time. It’s especially frustrating when I save a single edited track from Cubase 10 which I then want have automatically open within Wavelab so that it imports back to Cubase… This simplifies and speeds up work-flow and, when it works, is a great feature.
So far this week though, Wavelab has been behaving. I have no idea what’s different.