Auto layout used to automatically detect background layers and use them as frame background, but it's not anymore?

As the title cites, i used to place elements on a background layer (shape, image etc…) and when i auto layout it used the background layer automatically as frame properties, it is not the case anymore it doesn’t remove the background layer and it’s placed as an elements on the frame, it’s very wierd as it used to save me so much time, did enable some feature or is it the case from now on ?

Any updates here? I’m facing the same problem.