Originally Posted by bhavei

The music plays on background on most games that doesn't have button function, even on FPSE, while im playing FPSE all I have to do is press menu, then press the triangle, now I have music on background.

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I said it in the OP, but I'll try to make it more clear, the fact is:

when an app doesn't treat the key, the fallback happens!

So, if you press the menu button in FPSe, in this moment, the app is not treating the BUTTON_Y (triangle) anymore, so, the fallback happens. This is not an error. This behavior doesn't disturb the game experience because in this moment the triangle is not important for the app. The same happens in any game that doesn't treat the keys. This is the definition of fallback.

As the Iruna game is free I downloaded it and did a test. Dude, they're not telling the system which key is been treated. It's a serious implementation problem of the key event. Is better to tell the system that every key was treated than no one. I could take screenshots with the R1 button while I was moving the camera.

I sent a mail to them reporting this problem.

***dev explanation***
Probably they're returning the return of the super method in the key events, but they have to return just true instead and there's no need to call the Super. They only need to call the spotter if the Key is not treated for the game.