Disarmed weapons not picked up

As I recall, PCs were supposed to pick up disarmed weapons automatically, but it doesn't happen. It can especially suck for casters with small weapons. Due to lack of attention, I lost my enchanted katar after getting disarmed by the Elder Vamp(and the second one due to another bug - how likely is that?), since I was using spells and didn't notice the difference before changing areas. He tends to do that, and since it's dark there, one can easily miss it.

More than a year ago, after getting disarmed by the Divine Mummy of Wrath and losing a nice bow, I thought that the discussion had ended with saying that he was going to remove Disarm from all monsters?

Gron and Elder Vamp still use it, at least. That, or some really weird bug causes them to drop to the ground in the middle of the battle, but I don't think it's a coincidence it's happened a few times with the latter one.

Update: This time I picked it up. Also confirmed Elder Vamp uses disarm. I strongly suggest removing it, since during a heated battle you might easily miss the message and lose valuable items thanks to the full backpack, script not running correctly or crashes(which did happen a lot with the Elder Vamp for me).