UActorFactory::PostSpawnActor gets called twice when an actor blueprint class is dragged into the scene

Whenever dragging and dropping an actor to the Scene, the function UActorFactory:: PostSpawnActor gets called twice.

Tested in 4.20.3 (CL - 4433814), 4.21.1 (CL - 4705082), 4.22 (CL - 4708082)

1. Create a C++ Source project
2. Add the following code in the UActorFactory:: PostSpawnActor void function

   UE_LOG(LogTemp, Display, TEXT("Post Spawn Actor"));
   

1. Compile and Run
2. Drag and Drop an Empty Actor or an Actor Blueprint class to the scene