Custom widget fails to load in Opportunity Management after UI theme update

CRM Adobe Experience Cloud
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1

After a recent UI theme update in our aec-2023 environment, a custom widget embedded in the Opportunity Management dashboard completely fails to load. The widget displays pipeline analytics and was working perfectly before the theme change. Now users just see a blank space where the widget should appear, and the browser console shows errors about missing dependencies. The widget is built with React and integrates with the opportunity data API to show real-time metrics. The error messages mention something about CSS asset paths and component registration failures. Here’s the initialization code that’s now failing:

ReactDOM.render(
  <PipelineWidget opportunityId={oppId} />,
  document.getElementById('pipeline-widget-container')
);

The dashboard is completely broken without this widget as it’s the primary tool our sales team uses for pipeline visibility. The theme update appears to have changed how assets are loaded or how custom components integrate with the platform. Any insights on what might have changed with UI theme asset loading in aec-2023?

2

The React integration might be the issue here. If the theme update changed the way the platform loads React libraries, you could have version conflicts. Adobe Experience Cloud sometimes bundles its own React version, and if your widget is trying to use a different version, you’ll get component registration failures. Check what React version the platform is now using after the theme update and ensure your widget is compatible.

3

The unstyled rendering is definitely a CSS path issue. The new theme probably uses a different base path for custom widget styles. You need to update your stylesheet references to use the new theme’s asset URL pattern. Check your widget configuration for hardcoded paths.

4

Check your widget’s dependency management configuration. Theme updates can modify the global scope and how third-party libraries are exposed. If your React component relies on specific theme variables or utility functions that were renamed or removed, that would cause initialization failures. Look at the theme’s migration guide - there’s usually documentation about breaking changes in asset paths and API signatures.

5

Found the issue partially - the container ID did change from ‘pipeline-widget-container’ to ‘opp-analytics-zone’. But even after fixing that, I’m still seeing CSS loading errors in the console. The widget renders now but looks completely unstyled.

6

Your widget failure involves three interconnected issues introduced by the UI theme update that require systematic resolution.

First, UI theme asset changes in aec-2023’s latest theme version restructured how custom widgets load stylesheets and JavaScript resources. The theme moved from a flat asset structure to a versioned, namespaced approach where custom widget assets must be registered with explicit version tags. Your CSS files are likely returning 404 errors because they’re still referencing the old /assets/custom/ path when the new theme expects /assets/v2/widgets/custom/. You need to update your widget’s manifest file to declare asset dependencies using the new schema:

widgetConfig: {
  assets: {
    styles: ['v2/widgets/custom/pipeline-widget.css'],
    scripts: ['v2/widgets/custom/pipeline-bundle.js']
  }
}

Additionally, the theme now uses CSS custom properties (variables) for colors and spacing, replacing the old fixed class names. Your widget’s styles need to reference the new theme variables like var(--aec-primary-color) instead of hardcoded values.

Second, widget dependency management has become more strict with the theme update. The platform now uses a sandboxed module loading system to prevent conflicts between custom widgets and core platform components. Your React component needs to be registered as a proper module dependency rather than assuming React is globally available. The new theme isolates third-party libraries to avoid version conflicts. Update your widget initialization to explicitly import React from the platform’s module registry:

import { React, ReactDOM } from '@adobe/aec-widget-sdk';

widgetRegistry.register('pipeline-widget', {
  component: PipelineWidget,
  container: 'opp-analytics-zone'
});

This ensures your widget uses the platform’s React version (currently 18.2 in aec-2023) rather than bundling its own, which was causing the component registration failures you observed.

Third, React integration with the new dashboard architecture requires widgets to follow a lifecycle pattern that aligns with the theme’s rendering pipeline. The old direct ReactDOM.render approach bypasses the platform’s component lifecycle management, causing your widget to initialize before the dashboard container is fully ready. Implement the widget SDK’s lifecycle hooks - particularly the onDashboardReady callback - to ensure your React component mounts only after the theme has completely initialized the dashboard structure. This prevents race conditions where your widget tries to render into containers that don’t yet exist.

The complete fix involves three steps: update asset paths in your manifest, migrate to the widget SDK’s module system for dependency management, and implement proper lifecycle hooks for React component initialization. After these changes, your pipeline analytics widget will load reliably with the new theme and maintain compatibility with future theme updates since you’ll be using the official integration patterns rather than direct DOM manipulation.

7

UI theme updates in aec-2023 often change the asset loading paths and CSS variable names. Your widget’s stylesheets might be referencing old theme paths that no longer exist. Check the network tab to see if any CSS or JS files are returning 404 errors.