When cancelling a PlayerInteractAtEntityEvent when clicking on a villager, the trading menu still opens. I assume this is incorrect behaviour as the setCancelled method, should cancel the event like nothing happened.

Here is the code I used to test this:

@EventHandler(priority = EventPriority.MONITOR)
public void onPlayerInteractAtEntity(PlayerInteractAtEntityEvent e) {
  System.out.println("Cancelled");
  e.setCancelled(true);
}

"Cancelled" does appear in the console, but the trading menu still opens.