On my two phones (Xperia 10) the same. Both cameras not working with Jolla Camera and Advanced Camera. Torch is also not working.
But both cameras are working fine with Android app “Delta Chat”.
edit: on my wifes phone (Xperia 10), Jolla camera is working fine (both cams), Advanced Camera started OK with main cam, but selfie cam not working. app crashed after few attempts to switch back to main cam. Torch is working.
edit: See here, this solved problems with Jolla camera, torch and video playback. Thanks to @peterleinchen !