Pod requires restart to discover new topic added to existing consumer group

[mvassli]

Describe the bug
If I add a new topic to an existing consumer group in my Kafka cluster, I am required to restart running k8s pod before lag exporter start reporting metrics for the newly added topic. I assume that Lag exporter has to reconnect to the kafa cluster to discover the newly added topic? How to bypass this problem? Do I need to schedule periodic restart?
To Reproduce
Add new topic to existing consumer group monitored by kafka lag explorer

Environment

• Version: 0.8.2
• Version of Apache Kafka cluster: kafka_2.13-2.6.0
• Run with Helm or Standalone: Helm

Additional context
Add any other context about the problem here.