As described in IRC I want to "answer" an event by sending an event back to events source using broadcast exact. But that answer should be handled by a Behavior on the component.
When using any other broadcast type behaviors will be notified too. But not when using exact. Since Behavior does not implement IEventSink I cannot address the behavior directly instead of the component. Even if that works I think it wont be a good practice.
I'm not sure if this is a bug, since it's a philosophic question if exact broadcast should include behaviors of a component.