The TrackingStopped function causes a casting error when UActorComponents are selected that do not inherit from USceneComponent.
It is possible to have components selected that are not inherited from USceneComponent.
LevelEditorViewport.cpp: Line 2961
USceneComponent* SceneComponent =
CastChecked(EditableComponentIt);
if (SceneComponent) {
USceneComponent SelectedComponent =
Cast(*EditableComponentIt);