Rewriting VFX assets that contain multiple systems results in errors

Versions tested: 2023.2.0a23

Steps to repro:

1) Start a new HDRP project

2) Create a new heads & tails template  (or any other template and duplicate the entire system at least once).

3) Click on "+", create a new Simple Loop VFX Graph, name as a previous one, click to replace the file

4) Observe graph view glitching and errors thrown:

 

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.VFX.UI.VFXSystemBorder.Update () (at ./Library/PackageCache/com.unity.visualeffectgraph@16.0.2/Editor/Utils/VFXSystemBorder.cs:450) ...