Is anyone else having a hard time with the dews on regular Adventurers?

yep and no, to my knowledge, a good example is the flower thinguie quest we have going right now. go kill some monsters before accepting the quest, you won't see a single drop, then go accept the quest, and come back to the same map, you will see the floor filled with the required items for the quest. they were always there, you just couldn't see them, same if you add someone else to your party, even if they don't have the quest, you can see the drops because you do have the quest.

also, previous attempts of classes hunting for soul dews seem to further prove it, people have gone hunting with their BM's and such while keeping a warrior looking (in the party) and the warrior would be able to see a dew drop, even though he didn't do the killing, however, the BM can't see it because that dew is one out of five, the warrior specific one.

Just to add to the quest drop thing, people in your party killing stuff can see and loot the same items as you, only if they have the same quest started. In addition, all FFA drop bosses, like Pianus,also drop quest items for you, even if you didn't attack them at all. Damn, you can even see it if someone killed it before you, and you weren't even in the map.