Am I misunderstanding something about how pointers to superclasses work?

[angryzor]

Cast is a class with multiple subclasses. It contains a pointer Cast* parentCast to refer to its parent (it's a hierarchical tree structure).

For this field CppSharp generates the following code:

public global::RangersSDK.SurfRide.Cast ParentCast
{
    get
    {
        var __result0 = global::RangersSDK.SurfRide.Cast.__GetOrCreateInstance(((__Internal*)__Instance)->parentCast, true);
        return __result0;
    }

    set
    {
        ((__Internal*)__Instance)->parentCast = value is null ? __IntPtr.Zero : value.__Instance;
    }
}

The __GetOrCreateInstance call is implemented as follows:

internal static new Cast __CreateInstance(__IntPtr native, bool skipVTables = false)
{
    if (native == __IntPtr.Zero)
        return null;
    return new Cast(native.ToPointer(), skipVTables);
}

public static new Cast __GetOrCreateInstance(__IntPtr native, bool saveInstance = false, bool skipVTables = false)
{
    if (native == __IntPtr.Zero)
        return null;
    if (__TryGetNativeToManagedMapping(native, out var managed))
        return (Cast)managed;
    var result = __CreateInstance(native, skipVTables);
    if (saveInstance)
        __RecordNativeToManagedMapping(native, result);
    return result;
}

protected Cast(void* native, bool skipVTables = false)
    : base((void*) native)   // also calls the base constructor with skipVTables false
{
    if (native == null)
        return;
    if (!skipVTables)
        SetupVTables(true);
}

internal override void SetupVTables(bool destructorOnly = false)
{
    if (__VTables.IsTransient)
        __VTables = VTableLoader.SetupVTables(__Instance, destructorOnly);
}

So if parentCast contains a pointer to a subclass, Cast.SetupVTables gets called with this pointer to a subclass. But if I understand correctly the result from the SetupVTables call is cached for the entire type Cast. So now the cached vtables for Cast actually contain the vtables for the subclass, and if next I access a pointer to a different subclass the wrong vtables are loaded. Moreover, the same happens for all base classes since the base constructors were also called with skipVTables false? Am I misunderstanding something? Am I doing something wrong here? Did I misconfigure something?

[angryzor]

Just realized this is probably just not a supported scenario since there is no way to know what the real type of the object is...