Issue with Rate limit defined through KongClusterPlugin

Team,

We created a rate limiting feature through KongClusterPlugin with redis DB.
$ echo "
apiVersion: configuration.konghq.com/v1
kind: KongClusterPlugin
metadata:
name: global-rate-limit
annotations:
kubernetes.io/ingress.class: kong
labels:
global: “true”
config:
minute: 5
policy: redis
redis_host: redis
plugin: rate-limiting
" | kubectl apply -f -

Our Setup has Three Kong gateway pods running in K8s. This works fine sometimes and sometimes not. That is, I see 429 errors after 5th call in the same minute sometimes and other times it allows more than 5 calls in the same minute.

I removed the rate limit KongClusterPlugin from the cluster and even then my APIs are failing with this rate limit values. I am getting 429 errors after few hits even after removing the rate limit KongClusterPlugin from the K8s cluster.