Douglas Drumond Kayamaon Stack Overflow • Recommends
On “Detecting when system buttons are visible while using 'immersive mode'”
From Android Developers video, when you're in immersive sticky mode, the app isn't notified.
Immersive sticky mode starts at 6:56 and around 7:25 Roman Nurik tells that the listener won't be triggered.
This is the video: link to this video