• Your Rocket.Chat Experimental app version: 1.25.0.12983
• Your Rocket.Chat server version: 2.3.0
• Device (or Simulator) you're running with: iPad w/ iPad OS 13.2.3

When setting user list to "Group favorites", favorite users/rooms show up two times:

In the "Favorites" group and below under "Chats".

In Rocket.Chat directly (and in the old native iOS-app), favorite users/rooms are not shown in the list again.