Missing pod labels in Kibana in RHOCP 4

Issue

• Not all pod labels appear in Kibana, so filtering of application logs based on labels is not possible.
• All pod labels appear within the field kubernetes.flat_labels in Kibana, but not all of them appear as own fields like e.g. kubernetes.namespace_labels.<label_name>
• In Kibana, there is a difference between the content of kubernetes.flat_labels and the effective labels that appear with their own fields.
• In Kibana, pod labels like e.g. app.kubernetes.io/name: myapp and app.kubernetes.io/managed-by: openshift appear with their own fields kubernetes.labels.app.kubernetes.io/name: myapp and kubernetes.labels.app.kubernetes.io/managed-by: openshift. However pod labels like e.g. foo: bar only appear in Kibana as part of the field kubernetes.flat_labels
• How are labels parsed in logging collectors in RHOCP 4?