You can't change bots in customs/practice tool.

So when you join the custom/practice tool lobby to add/edit the line up of bots. if you ever so change the bot to another bot it will remove you from the lobby, You can still interact with the bots still after being removed, but the only thing you can do is remove more bots, you cannot join your self back into the line up.

Steps to produce bug.

1. Join custom, or practice tool.

2. Add bot.

3.Change bot to another bot

1. It removes you from the lobby while still being able to see the lobby, and semi interact with it.