Not really.
According to OS X El Capitan: Use Notification Center, you should be able to:
See missed notifications
In Notification Center, click Notifications, then do any of the following.
Get details: Click a notification to see the item in the associated app. For example, click a Mail notification to see the email in Mail. When you open an item, it’s removed from Notifications view.
But that is NOT happening for Keyboard Maestro notifications:
For example, when I click on this notification from the Notification Center dropdown list:
it does nothing. The full notification is NOT shown.
@peternlewis, is there anything we can do, or you can change, to allow us to show the full notification after the initial display has disappeared?
OTOH, Growl does an excellent job. I don't know how I did this, but somehow I have set KM to use Growl for error notifications. Example:
I find Growl much more user friendly than the Apple Notification Center.