What is happening:
Upon completing the quest "Please Mr Postpony", the character is left with the item "Cloudopolis Post Office Mail" (which uses the same icon as the Scroll Bag). It cannot be sold or equipped.
What should be happening:
The bag is described in the quest as a reward, but as it can't be sold or equipped it's just a burden on the character's inventory. It would be more appropriate for the end of the quest to replace the CPOM with a Scroll Bag or Satchel Bag (which are nothing but decoration at this point, but that's more useful).
Steps to reproduce the issue:
Play through the quest "Please Mr Postpony".
Game client version:
Build v 0.1.10.
Windows 10 (64 bit)
Crash logs or exceptions generated:
(None at this time.)