The issue is in parsing JSON stored in etcd. K8S API uses CRDs to validate CRs before storing them in etcd. but we do not provide any validation rules therefore allow any values to be stored in etcd. On operator side we cannot handle invalid types in JSON as CRDs validation rules are designed to be used for this and the feature is not supported by controller-runtime. we need to generate CRDs validation rules to never allow invalid types.

currently generation CRDs cannot be done. we need to make code changes to fix it. however, it requires a lot of testing because we can break current logic.

the work on it is postponed.

I was not able to generate CRD with validation to prevent storing such invalid resources in etcd