[2019] The close button at the top right doesnt work as of 9.20 when in this state.

Thanks for the report Karam bringing this up now.

That was removed by design, it was felt that there was no need for two buttons that do the same thing. We working through the menu's to all have an "X" button to close vs the X and close button.

As a workaround to exit this mode you can do the following:

1. Launch the creative server
2. Quickly cancel the search when put into the lobby screen
3. Select your game mode of choice.