Hi, I just found this problem on my system.
1- Create Empty Project
2- Add Chord Track
3- Add a lot of chords (10)
4- Use the range tool to select them
5- Move them with drag and drop to another place in the project
Result : Crash
Mac Mini M1
macOS Big Sur 11.6.4
Cubase 12.0.10
Same result running Native or via Rossetta