Please explain the tag sorting logic. If I select 2 tags that are associated with independent pictures (pictures associated with only one of the selected tags) then all pics of both tags are shown (OR logic). But, if there are some pics associated with both tags, then only those pics are shown (AND logic). Seems confusing.
To confuse it more: if I select 2 tags of which a few pics associated with either tag are also associated with both tags so that I only get a small set of pics, then select a 3rd tag with no pics associated, I see all the pics associated with any of the 3 tags.
The behavour varies a bit if tags are both in the same category, but different categories is more likely.
If I have 2 tags A and B and three images 1, 2 and 3.
I apply A to 1 and 2; and B to 2 and 3.
If I select both A and B, I get one image displayed - 2. This is AND.
If I check "Close" at the top of the screen, all three image sare displayed. This is OR.
If I then clear "Best", two images are displayed - 1 and 3. This is XOR.