Issue 1: I got an 'Enchanted goblin hide sack' from a scripted quest. Its icon was a sack and its description stated that the enchantment made things easier to carry. The stats listed 80% weight reduction.

This didn't work. Placing, say, a heavy armor in the bag took nothing from my total weight and the description sheet of the bag always stated 'sum of weight inside' + 0.8.

Later, my character was killed. When picking up my pack I noticed that the sack had transformed (!) into a container (icon was now a box). Its name was still 'Enchanted goblin hide sack' but the textual description was that of a generic container without any weight reduction, and no weight reduction was listed in the stats any longer. The weight of the bag/box itself had increased to 1.0 instead of 0.8.

Issue 2 (minor): A week back when I did the very first 'deliver map' quest, I noticed that my journal stated I had handed the map to Ivylsar, even though I had not. (Some other person told me he was dead and accepted the map.)

Issue 3 (minor): The description of Adelia Tyrell states 'Quest L3-7 P3-8'. She does not offer this quest. (Some player told me the quest was now moved to another NPC).

gamespy: rhizod character: Durin Smar

The sack itself was weight reduced. It weighed 80% less than a normal sack. It didn't actually reduce the things in it, by 80%.

I think I have the enchanted goblin hide sack now. Looks like just a normal box.

Goblin hide is lighter than mithral.

@DeputyCool That may be, but in that case there are still two bugs related to this sack:

1. The description text of the enchanted goblin hide sack is misleading. I cannot reproduce the exact formulation now, since the text was lost when the bag 'transformed', but I remember reading it several times as 'should decrease weight of items in it'. I think it even said something along the lines of "the enchantment helps take the load out of heavy items" or vaguely similar. (In fact, it could well have been the usual text on magical neverwinter bags; it was long since I played the regular game)

2. The bag should clearly not transform into a box losing the (admittedly rather useless) weight reduction upon player death (or whatever it was that triggered it).

I made a thread about the goblin sack, but thinking about it now 80% weight reduction is a TON, if you can contact the DM that made the quest.

Exploitable bug removed!

That would be an exploitable bug. Please trash it and don't post those on the forum in the future!