It is necessary that Scene always be square. So you need to follow the dimensions of the Stage. That is, if the user changes the width of the window (stage), the height of the window (stage) should automatically change. Is there a method that does this? (for example, stage.setProportional (true) )
Is it reasonable to influence the dimensions of a Scene by changing the Stage? (I think that Scene automatically adjusts to the dimensions of the Stage, while the dimensions of the Scene cannot be controlled directly after its creation)
No matter what Scene was exactly square. The main thing is to keep the proportions of the window when the user changes its size. How to do it?