Listener works weird on Android

[dvorapa]

When adding 0.01 (1 %) to setVolume few times in a row, volume sometimes unexpectedly jumps 3 % . I've found out that this is a listener issue. This is the way listener reacts to 0.01 additions using setVolume:

I/flutter (25103): listener 0.8
I/flutter (25103): setVolume 0.81
I/AudioManager(25103): setStreamVolume streamType:3index:12flags:0
I/flutter (25103): setVolume 0.82
I/AudioManager(25103): setStreamVolume streamType:3index:12flags:0
I/flutter (25103): setVolume 0.83
I/AudioManager(25103): setStreamVolume streamType:3index:12flags:0
I/flutter (25103): setVolume 0.84
I/AudioManager(25103): setStreamVolume streamType:3index:13flags:0
I/flutter (25103): listener 0.8667
I/flutter (25103): listener 0.8667
I/flutter (25103): setVolume 0.8767
I/AudioManager(25103): setStreamVolume streamType:3index:13flags:0
I/flutter (25103): setVolume 0.8867
I/AudioManager(25103): setStreamVolume streamType:3index:13flags:0

It somehow added 0.0267 to the device volume I set using setVolume. The same happens when subtracting 0.01 . It does not happen at specific volumes, every time it happens at a different volume.