In calendar mode, timepicker is not displayed and the showToggleButton does not work

[mortezakarimi64]

Hi.
In Calendar mode, if you set the timepicker true, it will not be displayed and also click on the showToggleButton button will not switch between the solar and Gregorian calendars. Also, how to get isGregorian in datepicker mode when press ToggleButton?

<Calendar value={this.state.value} isGregorian={this.state.isGregorian} timePicker={true}
      showToggleButton onChange={value => { this.setState({ value }) }}
/>