Happy new year!
UPanelWidget::AddChild(UWidget* Content) calls UWidget::RemoveFromParent() on Content. This produces an info message if Content has no parent.
I’m creating Widgets via C++ and add them to a panel. This causes a pollution of the message log with this info.
Please provide an option to deactivate that message besides setting UE_BUILD_SHIPPING || UE_BUILD_TEST (I’m not good enough yet in UE4 to change such things myself).