In a Downgraded (v2) Perspective, to select a project or folder that is to be focused, you can type the first few letters OR scroll through the list. I’ve always typed – I have way too many items to select one by scrolling.
AFAIK, in an Upgraded Perspective, to use the similar filter rule “Contained within project or folder:” you can only scroll. You can’t type. And it’s in a fairly small box. Am I missing something? Selecting by scrolling is extremely tedious! Is there a different way to select a project or folder? Or is there some procedure other than the “Contained within project or folder” rule that will produce these results?