Note to anyone reading this with zigbee2mqtt in mind.
The event triggers often do not create events unless the event value changes. In many cases this prevents detecting the same button pressed twice or more. So in my guide on Using the new action events in Zigbee2MQTT 2.0 I advice people to not use the event values in the trigger. Just trigger on anything related to the event entity and use conditions in the actions to decide which event value it was and what to do.