Going through the source code of the Jazztronauts on Github I have noticed that the game mode is supposed to use its own loading screen. Yet when I start playing the game mode in my game session, the game just uses the default Gmod loading screen. Which, when changing levels, doesn't even tell me info of what game mode and map I am playing.

Is there any way to switch the loading screen to the one of this game mode? Or is the Jazztronauts loading screen broken?