Topic automatically created to discuss Editor crashes on Camera::GetCameraRect when calling renderingDisplaySize on a nested Canvas GameObject
You can reproduce the issue by creating a new canvas and trying to access the render size right away:
public static void GetCanvasDisplaySizeCrash()
{
GameObject gameObject = new GameObject("TestCanvas");
var canvas = gameObject.AddComponent<Canvas>();
var renderingDisplaySize = canvas.renderingDisplaySize;
Debug.Log($"x: {renderingDisplaySize.x}, y: {renderingDisplaySize.y}");
}