If you create an activity which extends LightCycleAppCompatActivity and it contains a fragment which extends LightCycleSupportFragment, the activity receives a callback to onOptionsItemSelected when you select an option item (as usual), but the fragment doesn't.
It seems like this might be due to LightCycleAppCompatActivity not calling super.onOptionsItemSelected() - therefore the event doesn't get propagated to the fragments in the activity.
See: https://github.com/soundcloud/lightcycle/blob/master/lightcycle-lib/src/main/java/com/soundcloud/lightcycle/LightCycleAppCompatActivity.java#L47