One thing I recently stumbled upon is the fact that a card that is archived in a parent P, while being hidden from P’s noteboard, will still be shown below P in the outline. I consider this a bug.
I originally observed this in 2.2, issue persists in 2.3.
So this has been fixed. However due to the nature of archiving applying to a specific parent card rather than the whole card itself, means that archived priority cards will now show in the root level of the Outline – since effectively it’s a priority card without a parent.
If you don’t want a card to show in the Outline, please mark it as visible.