This happens running test accessibility/aria-visible-element-roles.html with assertions enabled.
<rdar://problem/100325957>
Pull request: https://github.com/WebKit/webkit/pull/4630
Committed 254970@main (a9c99d1f4261): <https://commits.webkit.org/254970@main> Reviewed commits have been landed. Closing PR #4630 and removing active labels.