message: [bugfix] when num_period_compare is not set
  Fixing issues where y_axis_format is set and not num_period_compare
diff: @@ -1209,11 +1209,17 @@ export const controls = {
  default: '.3s',
  choices: D3_FORMAT_OPTIONS,
  description: D3_FORMAT_DOCS,
  - mapStateToProps: state => ({
  - warning: state.controls && state.controls.num_period_compare.value !== '' ?
  + mapStateToProps: (state) => {
  + const showWarning = (
  + state.controls &&
  + state.controls.num_period_compare &&
  + state.controls.num_period_compare.value !== '');
  + return {
  + warning: showWarning ?
  t('When `Period Ratio` is set, the Y Axis Format is forced to `.1%`') : null,
  - disabled: state.controls && state.controls.num_period_compare.value !== '',
  - }),
  + disabled: showWarning,
  + };
  + },
  },
  y_axis_2_format: {
  