cava showing up 2 times in non-stereo mode

[martinocastelli]

When i set "stereo" to false cava shows up 2 times with the double of the bars
I'm using waybar-cava 0.15.0-1 on arch linux

config:

"autosens": 0,' 
"sensitivity": 3,'  
"bars": 8,'  
"lower_cutoff_freq": 50,  
"higher_cutoff_freq": 10000,  
"hide_on_silence": true,  
"sleep_timer": 1,  
"method": "pulse",  
"source": "auto",
"stereo": false,
"reverse": false,
"bar_delimiter": 1,
"monstercat": false,
"waves": false,
"noise_reduction": 0.77,
"input_delay": 2,
"format-icons": ["▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" ]