• Your Rocket.Chat Experimental app version: 4.5.0.9999999999
• Your Rocket.Chat server version: 3.1.0-develop open.rocket.chat
• Device (or Simulator) you're running with: Android P Samsung Galaxy J6

As the gif shows, when we add members to create a channel, then if we remove them, the last one doesn't get removed. We don't get a message about why we can't remove a single member. Also if we long press on that member item, we get the following error.