Sound.muteOnPause is false, but music still mutes when pause not triggered by DOM event

[QLNEO]

Title.

After I set game.sound.muteOnPause to false, it doesn't mute anymore when the game is unfocused, as expected, but when I manually set game.paused to true via a in-game event, the music still mutes, and even dispatches onMute signal. Is this a bug or I messed up?

EDIT: Oh, and I'm using 2.9.1.