Yea kinda dilemma, you want a public run, but it's your org set, I understand why you claiming your chest. But on the other hand it's still public, so you can only ask.

See, I don't think it's nice behavior or fair, but not a forbidden action imo.
We had a similar discussion with someone stealing items from a private game, there some people argued with the public and private aspect of games.

Generally speaking it's sad, but some players, no matter how rich they are, will always try to have an advantage.

As in lampos case, idk, lampo has helped me a lot and i played with him quite often already. To me he has always be a fair player, rather giving away free stuff he don't needs. The chests are sometimes opened by mercs or accident, maybe it wasn't his intention.

If you want public inf cows but secure your loot chance, I would suggest making it private and let it announce from a GM afterwards.