Ozt. Coffer Key is incorrectly marked as 'usable'

Operating System: Windows 10
ISP: CenturyLink Fiber
Internet Connection Speed: 1gbit
Date & Time: Jan-12-2023 17:00 MST
Frequency: Always
Character Name: Radon
Race: TarutaruM
World: Phoenix
Main Job: SMN
Support Job: WAR
Area and Coordinates: All area
Party or Solo: Solo
NPC Name: None
Monster Name: None

Steps:
- Buy any chest or coffer Key from a moogle vendor ("Curio Vendor Moogle")
- Examine the key in the usable items menu:
-- Target self, Enter, Items

Result:
The key is incorrectly listed as "Usable on self". Nothing happens when attempts to use it occur.

Expected Result:
Keys are not flagged as "self-usable".

Noted: This is not a bug, as I understand you can use a key then change subtargets to target a chest.

All treeasure chest keys have always been useable items. It's not a bug, just something they never implemented.

There are lots of other items that are flagged as usable but don't do anything when used on self.

Yes - I am aware this is not a bug, as I had tried using it then changing subtargets. I am unable to delete this thread, so here it remains, testament to my dumby-ness. ;)