Ah. It looks like the same UI is used for “bookmarks”, and the “added” field is for when the entry was added as a bookmark. For non-bookmark items, there’s no “added” date.
So you can look for a site by the last time you visited it (“Most Recent Visit”), but not by the first time, I reckon, not unless you bookmarked it then.
added is empty
investigates
Ah. It looks like the same UI is used for “bookmarks”, and the “added” field is for when the entry was added as a bookmark. For non-bookmark items, there’s no “added” date.
So you can look for a site by the last time you visited it (“Most Recent Visit”), but not by the first time, I reckon, not unless you bookmarked it then.