508 Compliance/knowledge check issue - feedback not accessible

Hello!

I have a course with knowledge checks and I am having the following issue:
When the submit button is activated, the feedback content gets displayed and the keyboard focus is trapped
within the heading and question text. The keyboard-only users are not able to navigate to any other active elements.

So, why aren't the feedback, choices, and other elements not accessible to the keyboard after selecting the answer?

I can only tab between the heading and question text...

Thanks so much for your help!