Hello, The accordion element we use in application has aria-label and aria-expanded set as per spec but during voice over in Mac Firefox does not say "Expanded" or "Collapsed". It works as expected in Chrome and Safari. Please see the screen shots. Chrome and Firefox on the same Google site - https://workspace.google.com/marketplace?pann=ogb. Chrome identifies the Expanded and Collapsed state but Firefox does not and no event changes are captured on click.