EditorGUI.BeginChangeCheck and EditorGUI.EndChangeCheck() not working with visual effect editor

This issue comes from a user feedback on the forum:

https://forum.unity.com/threads/modifying-exposedproperties-doesnt-trigger-endchangecheck-in-custom-editor-windows.1334666/

The user even provided a fix. We should investigate if the error is legitimate and eventually fix it (using the provided fix or not).