Kicked out swarm member still receives messages

Steps to reproduce

1. Alice creates a swarm and invites Bob and Carol to join
2. Bob and Carol accept the invitation
3. At least one message is sent in the chat (doesn't seem to matter who sends it)
4. Alice opens the "Details" panel, right-clicks on Bob's name and clicks on "Kick member"
5. Alice and Carol send messages in the swarm

• Expected result: Alice and Carol should receive each other's messages, but Bob shouldn't receive anything
• Actual result: Bob receives the messages too