WTR::AccessibilityController::focusedElement() cannot get the focused object via WKAccessibilityFocusedObject in isolated tree mode.
<rdar://problem/85069882>
Created attachment 443396 [details] Patch
Created attachment 443429 [details] Patch
Committed r285399 (243956@main): <https://commits.webkit.org/243956@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 443429 [details].
!ENABLE(ACCESSIBILITY) is broken as of this patch; landing a fix as bug 232826.