There are major changes to dialogs in Home Assistant 2026.3. Changes include:

  • ha-dialog is now a new element that uses the Web Awesome wa-dialog component rather than the MDC dialog. The final element used is the browser’s <dialog> element, which is displayed in the browser’s top layer.
  • the interim ha-wa-dialog is now ha-dialog as per above
  • a number of dialogs are now using the newer ha-adaptive-dialog which either uses ha-dialog for larger views, or ha-bottom-sheet for smaller views like mobiles.
  • more-info dialog is now using ha-adaptive-dialog.

As dialog modding is only a relatively newer feature of UIX, this may not affect you directly. However for those who jumped in and modded out more-info, or other dialogs, you will need to adapt your modifications, especially for more-info dialog.

A start of the types of changes required are below. This list is not exhaustive as there will be many scenarios based on what you have modded:

  • for dialogs that were using ha-wa-dialog in the interim, you should be able to change your modifications to update all use of ha-wa-dialog to ha-dialog.
  • for dialogs that have migrated to ha-adaptive-dialog, you will need to account for this extra element in your yaml theme selectors plus additional theming for ha-bottom-sheet.

This post will be updated as further examples arise in the 2026.3.0 beta period.

Additional Resource: For more information on likely changes for ha-dialog see Browser Mod Issue #1163