Support for tech preview API extensions was introduced in https://github.com/openshift/installer/pull/6336 and https://github.com/openshift/api/pull/1274 . In the case of https://github.com/openshift/api/pull/1278 , config/v1/0000_10_config-operator_01_infrastructure-TechPreviewNoUpgrade.crd.yaml was introduced which seems to result in both 0000_10_config-operator_01_infrastructure-TechPreviewNoUpgrade.crd.yaml and 0000_10_config-operator_01_infrastructure-Default.crd.yaml being rendered by the bootstrap. As a result, both CRDs are created during bootstrap. However, one of them(in this case the tech preview CRD) fails to be created.
We may need to modify the render command to be aware of feature gates when rendering manifests during bootstrap. Also, I'm open hearing other views on how this might work.