KubeScheduler is crashing after deleting Nodes

Issue

• While deleting and recreating nodes the KubeScheduler started crashing (CrashLoopBackOff) with the following warnings:

  runtime.go:78] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)
  

• OpenShift-Kube-Scheduler Cluster Operator is in a degraded state

• The Cluster Operator remained in the degraded state for a number of minutes but the issue was resolved after the Nodes were recreated.