Heapster's Grafana dashboard unavailable after Kubernetes installation using Rancher 1.5.1

Hello all,

We’ve been trying to upgrade our test Rancher installation to the version 1.5.1 and install and run Kubernetes.
The installation seems to have succeeded, but the Kubernetes Heapster Grafana dashboard is not accessible right after installation.

There is no monitoring-grafana entry in the “kubectl cluster-info” output as I would expect.
The Rancher menu in the web UI loses “System” and “Catalog” top level menu items after Kubernetes installation from the Catalog entry.

Here are some more details and logs regarding this situation

My question would be: did anybody see default Kubernetes Grafaha dashboard on Rancher 1.5.1?
Is that any kind of a known issue?