Not supported on Cloud Service
Converting Classic UI dialogs to Touch UI for AEM Cloud Service
Adobe's notable-changes page states that the Classic UI is no longer available. Components with cq:Dialog definitions or custom ExtJS widgets cannot be authored until they have Touch UI dialogs.
What to use instead
Granite UI (Coral 3) cq:dialog definitions; custom widgets become Granite UI fields or small client libraries.
How to fix it
- Run the dialog conversion from the AEM Modernization Tools for a first pass.
- Rebuild custom widgets (BPA code CDW) by hand or with agent help.
- Check that property names stay identical so existing content still binds.
- Visually test each dialog with real content.
How we detect it
- Readiness scan rule
classic-ui-dialog: Classic UI (ExtJS) dialogs and widgets.
Best Practices Analyzer reports it under LUI, CDW.
Can agents fix it?
High for standard fields; partial for custom widgets.
Source: Adobe Experience League. Checked 19 October 2026.