Small window bug in sidequest Not Just Any Banquet

Time: 11.44 AM (Stockholm, Sweden)
Frequency:
World name: Zodiark
Character name: Novarim Nightbrim
Retainer name: N/A
NPC name: N/A
Monster name: N/A
Class/Level: Ninja/63
Party or solo: Solo
In-game time: N/A
Area and coordinates: The Ruby Sea approx X:32 Y:7 (one of two destinations)
Housing: N/A
Steps:
1. When doing the sidequest Not Just Any Banquet, as you interact with the destination, the inventory window for Key Items open, but then the marker switches over to the world map, if it is open.