Whack-a-Mole Map Glitch

Time: Any time
Frequency: Always, reproduceable
World name: Adamantoise
Area and coordinates: X 30.8 Y 17.9

One of the three "pumpkin vine" objects in the level 7 quest "Whack-a-Mole" does not trigger the orange area circle on the map. There are three of these objects in the quest. Clicking on each spawns a "clever hedgemole" mob. If you trigger two of these, defeat the mobs and leave the "pumpkin vine" untouched at X 30.8 Y 17.9 that last vine is not set to mark properly on the map. I.e. the orange circle disappears and any attempt to view the quest on the map is met with the "Unable to open the map at this time." message.

I have been able to reproduce this. Note, it is _only_ this one pumpkin vine. The other two properly show on the map.

Steps:
1. Accept the level 7 quest "Whack-a-Mole" from Arenlona at Red Rooster Stead in Lower La Noscea.
2. Click two of the "pumpkin vine" objects and defeat the mobs.
3. Intentionally leave the vine at 30.8/17.9.
4. Note that the orange circle on the map disappears prematurely.
5. The one vine is not setup to show on the map.

I've submitted this before and it got rejected. I can duplicate it at will. Hopefully this makes sense.