Bug Treasure bug: new chests do not support extended items

[Steve]

I have found a new bug or well I don't think anyone else has noticed this one yet. On the map screen when you add a chest, click to add event and click the event dropdown for chest the item choices do not show extended items there is no clickable box to show the extended items database only the original and gold of course.

(source)

 

[Steve]

I just checked and it seems that extended items do show:

Spoiler

Am I missing something or is this working as intended?