Honor system date settings in Fluid layout

I used the trick described here to change my date format in System Preferences, which puts the day of the week in the inspector settings but this doesn’t affect the Fluid view in OF.

How can I change the Fluid view to show the day of the week, given that it doesn’t respect system-wide settings?

Update: ok my bad - you need to change the date on an item or switch perspectives, so OF will redraw the list, then it will show the date according to the system settings.