demo system: category Recently Read & status Unread returns same set of entries as Adaptive or All
That’s illogical, Captain. 
if there was no special handling there, recently read w/ status unread would always show nothing because this feed selects read articles only.
so you’d have to switch unread to something else to see something of value there all the time, thus special handling.
Ok, that makes more sense to me.
I’m thankful for Adaptive status and the feedprefs plugin.