[mixed time-series; time-series bar chart v2] Bar chart jumps to very narrow bars in larger time ranges

[rumbin]

Depending on the displayed time range, the width of the bar-chart bars becomes very narrow, up to the point where the bars become nearly invisible.

The effect depends on the selected time grain, but I haven't found a pattern yet.

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

How to reproduce the bug

1. Create a diagram of type mixed time-series (bar chart here!) or ** time-series bar chart v2**, based on a dataset that has at least 1 year of data in it
2. Select a time range of 1 year
3. Vary the time grain between weeks and quaters
4. Activate Data Zoom and play with it; alternatively reduce the time range gradually

Expected results

The bars of the bar chart should continuously be varied according to the time grain and the time rage, so the bar-to-gap ratio is harmonic.

The old time-series bar chart may serve as a good example here.

Actual results

The width of the bars is harmonically scaled in some time ranges, but when a certain threshold is exceeded, the bar width jumps to nearly invisible vertical lines.

The odd thing here is, that I cannot identify a pattern here:

• For weekly time-grain the jump is at about end of march, when the whole year is displayed.
• For monthly time-grain the threshold is at the beginning of march. So far so good.
• But: for quaterly time_grain the bars are always narrow lines, although there is by far enough space now.

Screenshots

The first gif shows that the threshold where the bars jump from narrow to wide and back can be narrowed by both Data Zoom and by changing the time range:

The second gif shows that the threshold depends on the time grain, where the few quaterly bars behave most erratic:

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.

[stale]

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[rumbin]

This issue should not be closed by the stale bot, in my eyes.

[rusackas]

@rumbin I don't want to dismissively close this, but it's been upward of a year, and I believe this was solved by a few correlated PRs. Can you verify this is resolved (or not!) in 2.0.1?

[rumbin]

I cannot reproduce this issue any longer on v2.0.1 with Bar Chart v2 and custom x-axis enabled.
Closing it, @rusackas.