WebXRSession::m_visibilityState is uninitialized. It should be initialized to XRVisibilityState::VISIBLE.
Created attachment 434217 [details] Patch
Comment on attachment 434217 [details] Patch Change looks fine, but you are going to need a ChangeLog.
Created attachment 434219 [details] Patch
Committed r280307 (239957@main): <https://commits.webkit.org/239957@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 434219 [details].
<rdar://problem/81124067>