Hey Christian,
I’ve been having the exact same problem, and so have a couple other people.
There doesn’t seem to be a way around it for the moment. It wasn’t like this in 8.1 and I think it must have slipped in by mistake as it was always possible to do editing in this manner - adding automation events (markers) to the start and finish of your edit - by using the range selection tool in stead of the object selection tool. I’m currently e-mailing support about this issue, so I’ll let you know what comes out of that…