Question How to avoid the movement of the shadowmap renderer of directional light

I am using the built-in pipeline. I noticed that the rendering of shadowmap of the directional light changes when I move the main camera. Since I am dealing with an inner scene, the only shadow casted by the sun will be within a small area around the window. Therefore, I set the shadow distance relatively low and turn off the cascade.

However, due to the low shadow distance shadows are fading out when camera moves away from window.

How can I make the renderer of shadowmap fixed at one point in space? In this case the renderer should be near the window.

 

It can be tricky to get rid of "shadow wobbling" when the camera or light moves.

Have you tried setting the shadow projection to stable fit in the project settings?
https://docs.unity3d.com/Manual/class-QualitySettings.html#Shadows

 

Yes. I have set shadow projection to stable fit. The problem I'm facing isn't wobbling. I noticed that the shadowmap renderer essentially follows my main camera so when the camera moves away from the window, the shadowmap also moves away so that it won't include the window.