Guild Wars 2

I’ve ran AC dungeon (exploration mode) 2-3 times and was not able to get a bag of wondrous goods off some of the bosses, such as the lieutenant/giant spider/troll. I’m not sure if it’s a glitch on my part because my team members are getting theirs each time.

DR (Diminishing Returns)
http://wiki.guildwars2.com/wiki/Diminishing_returns

I don’t think DR affects those but as people already mentioned in the dungeons section. The bags are not guaranteed drops. They can be replaced by some of the dungeon specific drops like the Ghostly Spineguard.

I get a 3 bags 100% times in first run, and ALWAYS drops progressively in the next 2-3 runs (usually to 0).
If that isn’t DR on action, may Newton come down and see it.