It's a sort of bug I encountered long ago, I'm not sure it's been reported but here it is anyway:
Here's how you do it:
1- Go to a trader and talk to him with your first character (lets call him Ichigo)
2- Now with both inventories open (Ichigo's and the trader's) click on the portrait of another of your characters (lets say Niiko)
3- Now all of a sudden you have Niiko's inventory open even though Niiko isn't besides the trader and you can actually trade with the trader
If you use that with all your characters in one city, i's alright I guess since you don't need to send all your chara to the trader.
But let's say you have Ichigo in one city and Niiko in another city, now you can exploit the bug like a trade cheat.
Or have one unimportant guy besides the trader, now each time after a fight, you can loot and sell without going back to the city.
I tried doing some screenshots to show what I mean...
Loot a bandit with Sasuke somewhere in the desert
Start a trade with Taito back at the city
Click on Sasuke's portrait
Sell your Stuff to the trader
The guy who fought at the start and did the looting doesn't need to go back to the city and can continue trying to kill bandits
Another method would be to start looting with Sasuke and while the bandits inventory is open, click on Taito's portrait and you get to loot the bandit with Taito...
