When exposedHost field is used Ingress won't be created.

{"level":"error","ts":1585080246.091675,"logger":"controller_apicast","msg":"Requeuing request...","error":"ingresses.extensions \"apicast-apicast-stage\" is invalid: spec.rules[0]: Forbidden: you do not have permission to set host fields in ingress rules","stacktrace":"github.com/3scale/apicast-operator/vendor/github.com/go-logr/zapr.(*zapLogger).Error\n\t/tmp/go/src/github.com/3scale/apicast-operator/vendor/github.com/go-logr/zapr/zapr.go:128\ngithub.com/3scale/apicast-operator/pkg/controller/apicast.(*ReconcileAPIcast).Reconcile\n\t/tmp/go/src/github.com/3scale/apicast-operator/pkg/controller/apicast/apicast_controller.go:181\ngithub.com/3scale/apicast-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/tmp/go/src/github.com/3scale/apicast-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:215\ngithub.com/3scale/apicast-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func1\n\t/tmp/go/src/github.com/3scale/apicast-operator/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:158\ngithub.com/3scale/apicast-operator/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil.func1\n\t/tmp/go/src/github.com/3scale/apicast-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133\ngithub.com/3scale/apicast-operator/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/tmp/go/src/github.com/3scale/apicast-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:134\ngithub.com/3scale/apicast-operator/vendor/k8s.io/apimachinery/pkg/util/wait.Until\n\t/tmp/go/src/github.com/3scale/apicast-operator/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88"}

even if apicast role contains

• apiGroups:
• extensions
  resources:
• ingresses
  verbs:
• '*'

EDIT: tested on Openshift 4.3.8