OLM manual upgrade `techpreview` -> `1.4.x` does not work

I have installed Camel-K operator from the OCP UI with the `techpreview` channel:

➜  ~ oc get csv
NAME                              DISPLAY                         VERSION   REPLACES                          PHASE
red-hat-camel-k-operator.v1.3.3   Red Hat Integration - Camel K   1.3.3     red-hat-camel-k-operator.v1.3.2   Succeeded


➜  ~ oc edit subscriptions.operators.coreos.com red-hat-camel-k
so we have
Spec:
  Channel:                1.4.x
  Install Plan Approval:  Automatic
  Name:                   red-hat-camel-k
  Source:                 camel-k-source
  Source Namespace:       openshift-marketplace
  Starting CSV:           red-hat-camel-k-operator.v1.3.3


➜  ~ oc get csv                                                    
NAME                              DISPLAY                         VERSION   REPLACES                          PHASE
red-hat-camel-k-operator.v1.3.3   Red Hat Integration - Camel K   1.3.3     red-hat-camel-k-operator.v1.3.2   Replacing
red-hat-camel-k-operator.v1.4.0   Red Hat Integration - Camel K   1.4.0     red-hat-camel-k-operator.v1.3.3   Failed


➜  ~ oc get csv red-hat-camel-k-operator.v1.4.0 -o yaml

    lastUpdateTime: "2021-07-20T12:31:34Z"
    message: 'install strategy failed: Deployment.apps "camel-k-operator" is invalid:
      spec.selector: Invalid value: v1.LabelSelector{MatchLabels:map[string]string{"app":"camel-k",
      "name":"camel-k-operator"}, MatchExpressions:[]v1.LabelSelectorRequirement(nil)}:
      field is immutable'