‘Group items’ option in pvr recordings view

I’ve noticed there is a ‘group items’ radio button in the options menu of the pvr recordings screen. To me it looks like the button has no visible effect as I keep seeing the same list view with the option active or not.

My pvr backedn is vdr with vnsi which currently has no option to pressent recordings in groups. So I was hoping I could leverage this option to group my recordings into folders for the various tv series I recorded.

Could you please explain if this a bug in the skin or what else is required to make this option work?

Thanks

Spirou