Button config fullWidthOnMobile doesn't work

[lauraalkhoury]

I have this snippet to configure the button tool:

tools: {
  button: {
    properties: {
      buttonColors: {
        value: {
          color: '#FFFFFF',
          backgroundColor: '#E25D7D'
        }
      },
      padding: {
        value: '10px 22px'
      },
      textAlign: {
        value: 'left'
      },
      size: {
        autoWidth: true,
        fullWidthOnMobile: true
      },
      borderRadius: '22px',
      containerPadding: '20px 0px 0px 0px'
    }
  }
}

and it seems like it isn't respecting the fullWidthOnMobile property as this is how the button looks in the mobile view: