Wrong filters were used for F-Curves for adding the modifiers. Now the Graph Editor curve visibility settings are only taken into account for this when the hotkey version (i.e. only_active == False) is used, which means that the button works again.
Wrong filters were used for F-Curves for adding the modifiers. Now the Graph Editor curve visibility settings are only taken into account for this when the hotkey version (i.e. only_active == False) is used, which means that the button works again.