Height of plot is 0 until resize after changing layout input

Hello,

I'm having a bit of trouble with my charts in a dashboard. I've implemented theme switching in my application using system variables and Angular Material. I'm able to change my chart's look and feel according to the colors of my theme. However, the container will collapse when I switch to a new theme because the plotly-plot element has a height of 0 until I resize the window.

Injectable

import { DOCUMENT } from '@angular/common';
import {
  computed,
  effect,
  inject,
  InjectionToken,
  signal,
} from '@angular/core';
import { WA_WINDOW } from '@ng-web-apis/common';

export const THEME = new InjectionToken('Theme', {
  factory: () => {
    const w = inject(WA_WINDOW);
    const d = inject(DOCUMENT);
    const darkMode = signal(true);
    const setDarkMode = effect(() =>
      d.documentElement.classList.toggle('light', !darkMode())
    );
    return {
      darkMode,
      textColor: computed(() => {
        darkMode();
        return getComputedStyle(d.documentElement).getPropertyValue(
          '--mat-app-text-color'
        );
      }),
    };
  },
});

Component

...
  readonly #theme = inject(THEME);

  readonly ageGenderChartLayout = computed<Partial<Plotly.Layout>>(() => ({
    barmode: 'stack',
    autosize: true,
    margin: {
      l: 60,
      r: 50,
      b: 100,
      t: 50,
      pad: 4,
    },
    title: 'People by Age',
    paper_bgcolor: 'rgba(255,255,255,0)',
    plot_bgcolor: 'rgba(255,255,255,0)',
    font: {
      color: this.#theme.textColor(),
    },
  }));
...

Template

<mat-card>
  <mat-card-content>
    @if (mapData$ | async; as mapData) {
    <plotly-plot [data]="mapData"
                 [layout]="mapLayout()"
                 [config]="{responsive: true, mapboxAccessToken: mapboxToken, displaylogo: false, modeBarButtonsToRemove: ['toImage']}" />
    } @else {
    <mat-spinner style="margin: auto;"></mat-spinner>
    }
  </mat-card-content>
</mat-card>

Before switching themes:

After switching themes (which updates the layout input of the plotly-plot component):

How can I have responsive charts while still have their containers "see" their actual height? is this a Plotly chart issue?

Comece pelo componente  do template do Angular e pelo input de layout atualizado pelo signal de tema. Reproduza uma troca de tema e compare a altura do contêiner do gráfico antes e depois da atualização, sem redimensionar a janela. Está concluído quando os gráficos responsive mantêm a altura real do contêiner imediatamente após as alterações no layout.