FoB Missing mobs
 

In field of bone there are two caves near the west side of the zone and near the pit, on live these caves are filled with large amounts of spiderslings the first cave (one closest to town) is lvl 3-5ish and the second is around 6-7 all are spiderlings of some fasion and drop spiderling silk along with eyes and legs.

That isn't a bug with the emulator source code, which is what these forums are for. That is an issue with the database, and is probably best to bring up on the PEQ forums, or the forums of the server you are playing on.