All objects of the Hierarchy are deleted along with MissingReferenceException on undoing after adding Input filters in Basic(Built-in) scene.

Steps to repro:
1. Create a new HDRP project.
2. File > New Scene > Select > Basic (Built-in) scene.
3. Windows > Render Pipeline > Graphics Compositor > Enable Compositor.
4. Render Schedule > Select Camera SubLayer > Add ChromaKeying Input Filter.
5. Press "CTRL + Z" 4-5 times.

Actual Result:
-All objects of the Hierarchy are deleted.
-MissingReferenceException error is thrown in the console.

Expected Result:
-No objects are deleted from the Hierarchy.
-No errors in the console.

Reproducible in:
2020.2.0b8, 2020.2.0a15 with Package Version 10.0.0-preview.27, 9.0.0-preview.54, 9.0.0-preview.33.

Note: Basic (Built-in) scene option is available from 2020.2.0a15.

Environment:
Occurring on Windows 10 & Mac 10.15.

Stacktrace:
Camera to copy from must not be null
UnityEngine.Rendering.HighDefinition.Compositor.CompositionManager:Update ()

MissingReferenceException: The object of type 'Camera' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
UnityEngine.Component.GetComponent[T] () (at <7c72a31c6717401a8f3a6328e904d4c3>:0)
UnityEngine.Rendering.HighDefinition.Compositor.CompositorLayer.UpdateOutputCamera () (at library/packagecache/com.unity.render-pipelines.high-definition@10.0.0-preview.27/runtime/compositor/compositionlayer.cs:476)
UnityEngine.Rendering.HighDefinition.Compositor.CompositorLayer.Update () (at library/packagecache/com.unity.render-pipelines.high-definition@10.0.0-preview.27/runtime/compositor/compositionlayer.cs:488)
UnityEngine.Rendering.HighDefinition.Compositor.CompositionManager.Update () (at library/packagecache/com.unity.render-pipelines.high-definition@10.0.0-preview.27/runtime/compositor/compositionmanager.cs:509)