Searching for "MAGIC pen" in item shop shows ARMOR pen items

Typing "magic pen" in item shop and it will show some Tier 3 (fully built) FLAT ARMOR pen items as well, as shown in linked screenshot.

Funny how Duskblade of Draktharr isn't shown though, while is still showing up for magic pen.

Extra info: I'm using old client, and searching for magic pen shows nothing in item sets.