I've noticed a couple of discrepancies in how things behave when using filters:

1. When in a filter view, using m to mark an item as read makes all the items disappear. That was surprising.

   

2. When pressing enter to view an article and then returning to the list view, the cursor position isn't preserved -- it always jumps back up to the very first item. That's annoying, particular if the list of filtered items is long.