Switches to normal UI when attempting to join a non-editor mode server in editor mode

When attempting to join a non-editor mode server in editor mode the player gets kicked and the normal UI appears. When making a new world/project the UI temporarily goes back to normal. When opening a world, the UI goes back to the Editor UI. 

Steps to Reproduce:

• Attempt joining a non-editor mode server and get kicked
• Click through the tabs and buttons to see the normal UI

Screenshots/Videos: https://1drv.ms/v/c/104a26a756a2fb01/ET445fXRHkNGm-h5Om9aYjEBGIF81JwH4Rk99dIkQZKSCw?e=9xZKNQ