NPC Spawn Issue: necromancer vampire bats in erud's crossing

[Porky]

I was here today trying to farm these to play with on my sub 10 alt and I killed about 40 of these (3-4 up at a time respawn every 6ish minutes pretty common spawn) but I did not see a single boned wand drop.

I don't know if you meant your fix was to increase spawn rates or to increase drop rates and I realize that the fix hasn't gone in yet. Just updating with new info.