Interactive Video - inconsistent trigger of completion event
The Interactive Video should always trigger completion event.
Once ANY of H5P interaction is capable of triggering the 'completion' event it should trigger the event regardless it's settings.
In case of IV the completion event is not triggered if editor (for example) decides to remove the 'submit screen'.
Unfortunately this is not documented clearly anywhere, nor the fact that IV will not trigger completion event if there are no interactions.