score:1

Accepted answer

seems parser doesn't really work well with. simply remove parser in the option, you can see the clear result.

time: {
  //parser: 'hh:mm',
  tooltipformat: 'hh:mm',
  unit: 'minute',
  stepsize: 10,
  displayformats: {
    'minute': 'hh:mm',
    'hour': 'hh:mm'
  }
}

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