play/pause key disabled in key-lock settings may still work when screen is off

jianping1010

FIIO M7 firmware: 1.0.8
FIIO music app: 3.0.3

I tried to disable play/pause key in key-lock settings on my FIIO M7 player in order to prevent play/pause key from being accidentally touched and starting music play when screen is off. but the setting didn't work as expected.

when music is playing and screen is off, the play/pause key is disabled as expected, and music won't stop when play/pause key is touched.

but if I pause the music play first and then turn screen off, I found the play/pause will still work. this allows music play to resume if play/pause key is accidentally touched during screen off time.

please fix this issue, as it defeats the key-lock setting purpose of keeping music play stopped when screen is off. And user may find battery is drained because the player is unintentionally started to play when in the pocket.

Thanks