Reports from multiple users including my self that avatars based on one of my bases are invisible after the latest update. It is perfectly visible in the mirror, but not in first person. Other meshes other than the body appear to be working normally. Almost as though the entire avatar has been headchopped away. Physbones and contacts appear normally and in the correct positions in the debug overlays. It doesn't seem to affect all avatars for all users, but at least one version is broken for everyone that I've asked, including myself. For me, only the second avatar listed below exhibits the issue, but for some users it is the opposite, or neither. It doesn't appear to be related to the use of any particular shader, as the two listed below use different shaders from each other.
avtr_d756971a-6749-42be-8eb8-872570f57a1c
avtr_1a22c6aa-f316-4bb9-a75d-ce42b61b99cc