Just to be sure, I've wiped system, caches and installed clean again.
Stock camera doesn't work. Can only access it from the quick access on the lock screen, though
Going back to 5.4.2 for now. Thanks!
I've just clean installed ROM 5.4.3 (coming from 5.4.2) and the only issue so far is that I can't access the camera with the native app (can't find it) nor with Google's or A Better Camera.
I get the "Unable to start camera" message.