Deactivated user and readonly room/channel mode

Description

Hello everyone.
who can help?
earlier, when I deactivated a user in the admin panel, the chat channel with him became read-only.
now I can continue chat with the deactivated user.
how to return early behavior?

Server Setup Information

  • Version of Rocket.Chat Server: 3.12.0
  • Operating System: ubuntu
  • Deployment Method: etc
  • Number of Running Instances: 1
  • DB Replicaset Oplog: (oplog Enabled)
  • NodeJS Version: v12.18.4
  • MongoDB Version: 4.0.12 / mmapv1 (oplog Enabled)
  • Proxy: nginx
  • Firewalls involved:

Any additional Information