As the title says, for example its currently happening in A2 when you are being sent to Cordadon. You simply talk to the quest giver, get the experience, quit and restart, then talk again. Hope these get fixed, i know you can simply not do it, but i got like half a level that way simply because i had to reset the game. Pretty sure that can work with other quests and if you can force item rewards that way, it will get ridiculous.

Cheers.