C12 Automation Copy with Folder Bug(?)

Hey, I just got this strange bug:
When I copy several tracks with automation, everything is fine.
But when I also select the top part of the Folder track, copied parts don’t have automation copied properly:

  • automation at the beginning and the end of the whole section is copied
  • any automation inside copied section is not copied

I’ve been doing this for ages, and it seems to be the first time to happen. I feel confused now.

It’s a problem with standard Ctr-C, Ctrl-V (keyboard shortcuts or the same functions selected in the menu).
It’s fine with Alt-Drag.

Cubase 12.0.4 Build 317, Win10 Pro 21H1 19043.2130