Description

By Default, when adding a radio group in AppBuilder, the first radio is selected both in the design area and preview, and only one radio button can be selected at a time.

The radio group logic is changed in #15792, and this._radioButtons() returns an empty array when adding the radio group in the design area and when opening the preview. This leads to the name, required, and checked button properties not being set, and the change, blurRadio, and keyup events not being tracked.

https://github.com/IgniteUI/igniteui-angular/blob/master/projects/igniteui-angular/src/lib/directives/radio/radio-group.directive.ts#L534

• igniteui-angular version: 19.2.x, 20.0.x
• browser: any

Steps to reproduce

1. Use this PR https://infragistics.visualstudio.com/Indigo_Platform/_git/AppBuilder/pullrequest/16899 or update @infragistics/igniteui-angular to be at least 19.2.x in AppBuilder.
2. Add a radio group.

Result

AppBuilder using [email protected]

Expected result

AppBuilder production using [email protected]