Accessibility Bug: Screen readers announce radio buttons incorrectly
Two primary issues.
If using the question slide template, the multiple choice questions always announce as a group of checkboxes with screen readers, even if they are radio buttons. The toggle between single answer and multiple answer changes the state visibly, but not programmatically.
If using the Radio Group interactive component, the radio buttons correctly announce as radios, however, when navigating to the next radio option, the screen reader announces the previously selected option again in addition to the new option.
Example:
A radio group with options A, B and C.
With JAWS or NVDA navigate to Option A, "Option A" announces. When navigating to Option B, "Option B, Option A" announces.

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AdminShivang (Admin, Adobe Captivate) commented
Thank you for sharing your feedback.
We tested this workflow with a sample project in Captivate 12 using an MCQ slide with the NVDA screen reader, but could not reproduce the issue as it only reads out "Option B" during navigation, and not "Option B, Option A".
If you haven’t already, please install the latest Captivate update (v12.6) and check if it helps. You can update directly via Help > Check for Updates in Captivate, or download the setup from this link: https://adobe.com/products/captivate/vipdownload.html