UMLR — Does the abort of an Do/Activity by an incoming event count as a Completion Event

There are good reasons why end of behavior by an incoming external event should not trigger a completion event., e.g., RTC.

However it is not explicit, which is confusing especially as it seems the completion event has a higher dispatching priority.

In 14.2.3.8.3 .."In case of simple States, a completion event is generated when the associated entry
and doActivity Behaviors have completed executing"

A statement should be added here (or elsewhere) to clarify that this does not include the aborting of the task, or that this is different from a completion event.