When the flags RestoreUITexturePNGPremultipliedAlpha and PremultiplyAlpha are set to true the import of textures crashes.

RegisteredTextureBuckets[TexturePriority].Emplace(Texture);

void UTexture2D::UpdateResource()

GetDefault<UNoesisSettings>()->RestoreUITexturePNGPremultipliedAlpha

NoesisEngineModule  void OnObjectPropertyChanged(UObject* Object, struct FPropertyChangedEvent& Event)

FCoreUObjectDelegates::OnObjectPropertyChanged.Broadcast(Texture, EmptyPropertyChangedEvent);

PostCompilation(Texture.Get());

RegisteredTextureBuckets[PriorityIndex];

FTextureCompilingManager::ProcessTextures()

We should also change plugin code to use FillPNGZeroAlpha setting from TextureImporter section instead of creating our own setting.