Timmeeeey

Ok, I think I have to use the `attach(element: ElementRef, settings?: OverlaySettings)` because the component has inputs. This seems to work but when opening the context menu, the background darkens....

@georgianastasov It didn't work without modal true, but I figured out another solution with a custom backdrop.

@jackofdiamond5 hi, is this something that is being considered to be implemented?