So, after running into the horror of trolls, I bought umpteen flasks of oil and put them on all my guys. I pre-equip them in the weapon slots on everyone. So, in the gnoll cave, I run into a troll, and I think: I'm ready. Except: after dealing with the nearby gnolls, I go into inventory on fighter Regdar to click on my weapon tabs to find the pre-equipped flasks... and find that the flasks have vanished 1,2,3,4,5. Every tab I check: they're gone. And every time I click on a tab that had them, a flask disappears from Regdar's inventory. No matter: I'll just pick up a flask and drop it on the weapon hand. I do that: and it vanishes. I do it again: it vanishes. So, for this battle, SOME of my guys do have some bottles (which they chuck); most miss. Then I have cleric Eberk's inventory open, so I move a bottle of purified acid to his hand... and it vanishes. Same with the next bottle. The only way I survived the battle was Scorching Ray and Tasha's Hideous Laughter. What gives?