"Facebook Official" block not applying customizations

I'm trying to edit the "External: Facebook Official" block's template customizations but it doesn't seem to be responding to the changes. For instance, I'd like to not show the faces of people who like our Facebook page. So I turn off "Show Faces" but it still shows the faces. There's also a "Maximum rows" option that is supposed to limit the number of rows of faces to display. I set it to 0 and I still get a row of faces. If I switch the "Plugin type" to "Activity Feed" instead of "Like Box" I get nothing.

So I'm not sure if Facebook's code changed but the block doesn't seem to be responding to the same options it used to.