[Bug] Reset consume offset then the consumer cannot continue consume immediately

[humkum]

BUG REPORT

1. Please describe the issue you observed:

• What did you do (The steps to reproduce)?
  Reset the consumer's consume offset
• What did you expect to see?
  The consumer's consumption offset was reseted, and the consumer can continue consume immediately.
• What did you see instead?
  The consumer's consumption offset was reseted successfully, but the consumer continue consume message after about 2 minutes when receive the broker's balance notification again.

2. Please tell us about your environment:

• What is your OS?
  Ubuntu & CentOS
• What is your client version?
  latest
• What is your RocketMQ version?
  4.9

3. Other information (e.g. detailed explanation, logs, related issues, suggestions on how to fix, etc):
   After reseting offset, the consumer group detail cannot show the clientID, while the consumer client is still online.