When joining or following a friend into servers when server size is 1, it is illogical to make the joining friend wait in a queue. They will never be able to join the friend who is playing in a single player experience. It says, “You are position in line: 1” and will only try to join the server when the friend leaves. Then it says, “Your friend is no longer in the server”. I tried Disabling Social Slots in the Access Settings of the place, but it still failed to create a new server. This can be tested by joining a friend in my single player game: Studio Lite - Roblox
Expected behavior
The joining algorithm should realize the friend is in a single player starting place (server size = 1) and put the joining friend in a new single server. The two friends can still chat together using Party Chat, but they will be in their own individual servers. Perhaps it could display a message saying “Launching a new single player server. Chat with your friend through Party Chat”.