Interceptor doesn't scale in my setup

[christidis]

I have no issues with my scaled-to-zero deployments with keda-Http which seems to work as expected, but the interceptor deployment itself doesn't scale as expected when I am stress testing my backends. It is constantly stuck to 1 pod.

I also tried setting the pendingRequestsInterceptor from 200 to 50 with no luck.
Here's how I installed the tools for 0.3.0.

>helm repo add kedacore https://kedacore.github.io/charts
>helm repo update
>helm install keda kedacore/keda --namespace keda --create-namespace
>helm upgrade --install http-add-on kedacore/keda-add-ons-http --namespace keda --set interceptor.replicas.waitTimeout=600s --set scaler.pendingRequestsInterceptor=50 --debug

this is the created scaledobject

>kubectl -n keda get scaledobject keda-add-ons-http-interceptor
NAME                            SCALETARGETKIND      SCALETARGETNAME                 MIN   MAX   TRIGGERS   AUTHENTICATION   READY   ACTIVE   FALLBACK   AGE
keda-add-ons-http-interceptor   apps/v1.Deployment   keda-add-ons-http-interceptor   1    50    external                    True    True     False      49d

>kubectl -n keda get pods
NAME                                                    READY   STATUS    RESTARTS   AGE
keda-add-ons-http-controller-manager-7d55c644d9-v7gb5   2/2     Running   0          16h
keda-add-ons-http-external-scaler-6d9f9d4859-v2kqd      1/1     Running   73         16h
keda-add-ons-http-interceptor-68bdb9c679-h4dkd          1/1     Running   13         16h
keda-operator-68cd48977c-8x8j2                          1/1     Running   45         49d
keda-operator-metrics-apiserver-7d888bf9b5-h4gf4        1/1     Running   0          49d

Any idea where to look at?

Also, scaler itself (and keda operator) restarts often, especially when stressing the system.

For now I have increased the minimum number of interceptor replicas that should be running from 1 to 10 which helps a bit but I would like to have interceptor autoscaled as it should.