Describe the bug
After deploying Asset Share Commons (ASC) and the sample content package to the DEV environment, all assets (both sample and custom) appear in search results and the pages render correctly.
However, asset thumbnails are not loading.
All other functionality — search, filters, pagination, and design — works as expected.
⸻
Environment
• AEM Version: AEM 6.5.21
• Asset Share Commons Version: 3.11.4
• Environment Type: Author and Publish
⸻
To Reproduce
1. Install Asset Share Commons package on AEM DEV environment.
2. Install the official ASC sample content package.
3. Open /content/asset-share-commons/en/light.html (or similar page).
4. Observe that all assets are listed properly.
5. Notice that the thumbnail images are missing — broken image icons are shown.
⸻
Expected behavior
Asset thumbnails (from DAM renditions such as cq5dam.thumbnail.319.319.png) should display properly in the search results and asset cards, just like on the local AEM instance.
Additional context
• The issue occurs for both sample ASC assets and custom uploaded assets.
• The same setup works correctly on local AEM, where thumbnails display fine.
• Renditions do exist for all affected assets in /content/dam/.../renditions/.
NOTE :
Assets are accessible directly in AEM DAM console; only ASC fails to render thumbnails
No customizations were applied beyond deploying the official ASC and content packages.
⸻
Possible Fix / Investigation Pointers
• Verify if dispatcher rules block /content/dam//renditions/ paths.
• Allow these in the filter section and clear cache.
• Confirm that the user or service principal rendering the page (often anonymous or asset-share-commons) has read access to renditions under /content/dam.
• Check if ASC thumbnail URLs are being rewritten or transformed by custom rewrite rules.
• Ensure that AEM Publish instances have access to binary renditions (e.g., not restricted by closed user groups).
