Not sure if this is the last word on the subject, but the following says the .vcf paste in Apple Mail is an Apple problem, and bug reports have been filed with Apple:
I couldn’t originally figure out what a Radar was in the Apple Discussion thread, but I guess it’s something that’s filed with Apple. But maybe it’s a program problem too. I don’t know. If Apple hasn’t fixed it yet, maybe they don’t consider it their problem.
The XML problem in Wavelab might be a separate problem. Like I said I also get exactly the same XML paste in 8.0.4 on Windows, but only if a selected clip is copied in the montage, and then pasted into a text editor. So that might have some bearing on what you’re seeing, although what you’re seeing seems to get mixed up between clip list selection, and montage clip selection, so definitely sounds wrong.