Hi brundlefly, thanks for posting. I'm even more confused now.......
While investigating my laptop to see if there's any setting differences I've come across something really bizarre.
This is a different project to the earlier one on my main DAW.
I have two tracks from a piano, one recorded from the right hand of a keyboard, the other is the left hand. Both have CC-64 data on them, I can see it in the track view and also as controller lines in the PRV both in the lane view and the main PRV window when I close all lanes.
However, despite having apparently identical settings, one is displaying the handles and the other isn't. I am perplexed as to what is happening and now I'm not so sure this is a bug but more likely user error.
Any ideas?