It would have to hard quantize events. Maybe that’s the reason why this feature has not been implemented yet? Or maybe there is a different reason like a comletely different coding structure of a pattern event compared to a midi part.
I think this is key. The Patterns themselves don’t seem to exist as objects on the Track like MIDI Parts. Rather they are like an element of the actual Track. Try this:
Create a New Track that uses Patterns
Add a Pattern Event and enter a Pattern into it.
Delete the Pattern Event from the Track
Duplicate the Track
Create a Pattern Event on the duplicated Track
When you open this new Pattern Event it will have the original Pattern in it