Margins not updating correctly in pie chart after manual resizing

When dynamically updating a pie chart, I encountered an issue where the available space for the pie chart does not update properly after changing the plot size.

For my setup, the plot is rendered using Plotly in a React app. The plot state is managed using useState() and the layout updates are triggered via useEffect() whenever a user changes the settings object (for plot width, height, font, etc). The update is performed like this:

setPlot((prevPlot) => ({
  ...prevPlot,
  layout: {
    ...prevPlot.layout,
    width: displaySizes.width,
    height: displaySizes.height,
    margin: {
      ...prevPlot.layout.margin,
      t: settings.marginTop,
      b: settings.marginBottom,
      l: settings.marginLeft,
      r: settings.marginRight,
    },
    // other layout updates
  },
}));

Used versions are "plotly.js": "^3.0.0", "plotly.js-dist-min": "^3.0.1", "react-plotly.js": "^2.6.0".

Steps to reproduce the described bug:

1. Render a pie chart with segments [39,61]
2. Set the plot size to an incorrect size, e.g. width: 40, height: 255
3. Correct the plot size to valid values, e.g. width: 400, height: 255

Plot, before resizing:

Plot, after resizing as described:

The visible margins are now way larger than what is defined in the layout and much larger than necessary, since the pie chart could take up more space (like before). Changing the margins or plot size has no effect on the margins; only randomly increasing or decreasing the text size causes the plot to reset and render correctly.
It seems like the issue is related to the segment ratio: It only occurs when the pie segments are similar (e.g. [39, 61]), but not when they differ a lot (e.g. [10, 90]).

None of the approaches I came across online (such as Plotly.Plots.resize() or using the revision prop) solved this problem.

先在使用 plotly.js 3.0.x 和 react-plotly.js 2.6.0 的 React 應用程式中，使用包含區段 [39,61] 的圓餅圖重現問題。追蹤將寬度從 40 變更為 400 後的版面配置更新，並與 [10,90] 的情況比較。完成的判定標準是，調整大小和邊距更新會重新計算圓餅圖的可用空間，而不需要變更 font-size。