[2020] Chests drop only 2 gold

Could you show me the approximate area you used the town portal in? There is indeed a function that reduces the loot from chests if you use a town portal. This is intended to reduce farming of chests by portalling to the same zone repeatedly, and I certainly don’t think it should affect you if you’re doing the quest normally.

If I know where you used your portal I can look into making adjustments.

This isn’t a solution that’s meant to exist long term-- it’s because zone progress doesn’t save currently. In the future, if you portal back in after opening a chest, the chest will just remain open from before (and enemies won’t respawn).