Gizmos not being drawn until GameObject selected

I have implemented Scene loading in my game and have three scenes: Persistent, Main Menu and Game

By default, the player is loaded into the Persistent scene, which immediately loads the Main Menu, and when the player clicks on Play, Main Menu is unloaded and Game is loaded.

Now, the two active scenes are Persistent and Game.

However, I have a script with OnDrawGizmos on a GameObject in the Game scene. It seems that by default gizmos only begin to be drawn when I click on that GameObject, sort of activating it, and everything works fine. This used to just work before because Game was my only scene and Unity automatically selected that first GameObject. Now, with multiple scenes, no GameObject is selected by default and my gizmos won’t draw until I manually click on it.

How can I solve this?