I can replicate this on both, mixed time-series and time-series bar chart v2.

The D3 format of a saved metric is not respected in the

• y-axis labels
• tooltips
• Show Values

How to reproduce the bug

1. Have a saved metric defined for a dataset
2. Have a custom D3 format defined for this metric
3. Create a diagram of type mixed time-series or ** time-series bar chart v2**
4. Activate the Show Values option

Expected results

The y-axis labels, the tooltips and the bar values are formatted according to the defined D3 format of the metric.

Actual results

The d3 format of the metric is entirely ignored.

When overriding the y-axis format via the chart's Customize settings, the y-labels and tooltips are respecting this override.
The bar values need some differentiation here, though:

• time-series bar chart v2: respects the chart's y-axis D3 format
• mixed time-series: does not respect the chart's y-axis D3 format

Screenshots

• time-series bar chart v2

• mixed time-series: (also notice how the bar values are not customizable here)

Environment

• browser type and version: Chrome 96.0.4664.93
• superset version: 1.4.0
• all other versions: as defined in Superset's Docker image
• Feature flags:

# stable:
      "THUMBNAILS": True,
      "SQLLAB_BACKEND_PERSISTENCE": True,
      "ENABLE_TEMPLATE_PROCESSING": True,
      "DASHBOARD_CROSS_FILTERS": True,

      # experimental:
      "ALERT_REPORTS": True,
      "ALERTS_ATTACH_REPORTS": True,
      "DASHBOARD_NATIVE_FILTERS": True,

      # unclassified:
      "ENABLE_EXPLORE_DRAG_AND_DROP": True,
      "ENABLE_DND_WITH_CLICK_UX": True,

      # development:
      "DASHBOARD_NATIVE_FILTERS_SET": True

Checklist

Make sure to follow these steps before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.