How to have multiple runtime viewport

In Unity, the “Scene” tab displays the current world as it is in the game + I have the freedom to fly with the camera, make runtime edits and so on.
When I tried to have another viewport aside the main viewport, the scene is not runtime updated there,

In the main viewport I have an opened door and a number of runtime spawned Actors, the second viewport shows nothing of this.
I have checked both, the “Game view” option and the “Realtime” option with no positive results.

Well I was unable to run multiple gameview ports, but I managed to do what I wanted to do, roaming freely after running the game,

After you play the game in the selected viewport (running normally (Alt+P)), Press F8 or Click the button right to “Stop” (Detaches from the player controller)