After last weekās OTA patch, I had the same issue on Zirconia, both with the default app and with OpenCamera. I had been about to file a report, but then another patch came out and the camera focus worked again after I installed it.
(Since patches donāt normally come out so close together, Iād assumed youād gotten deluged with camera-focus complaints and had released the second patch in response to it. Surprised to hear you hadnāt seen any prior reports.)