A recent refactor to the completion handler in performRequest resulted in registrations not to complete.
rdar://89206950
Created attachment 452825 [details] Patch
Comment on attachment 452825 [details] Patch r=me
Committed r290317 (247639@main): <https://commits.webkit.org/247639@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 452825 [details].