I had that bug few times when chat got merged into item

bin

The real question is why do you have a troll nest on pally

722 fg bin

If you traded it. Does it still have dialog?

It's the base. What do you expect but to be trolled by the game if you're messing with troll nest

Dialog strings are in un-order.
Most likely due to you installing a mod, or gamepatch having faults.

I don't excactly know how its in d2, but in baldur's gate every piece of text was a dialog string. Either it was a npc text, a name, a item name, a item description, a spell description, a quest etc... To make new stuff u needed to add dialog strings, if u just used a number u fucked up.