This appears to be exclusive to me, but..
 

On classic, this has happened numerous times.

Due to it, I can't finish the babord quest AT ALL, cutting me off from the rest of the high end stuff.

So, is there any way I can fix this?

Yeah, I dunno what's going on there...those NPCs have no movement code, and yet they move. It's worst in the castle, where entire pillars will just sort of drift at will...

Strange, it only seems to happen on non-p2p.
NPC players rotate (VERY slowly)
NPCs have a strong tendancy to trigger the "created" flag at times...

it is a wierd thing. Thats why i dont script non-p2p :)

Not much choice on Classic until a batcher is made to convert .graal to NPCServ .nw and Classic gets its own NPCServ. There are 5000 levels to convert, it'd take me years by hand...well, a week at least.

It wouldn't need an NPCServ persé, if you are going to use some program to convert all levels to .nw and then just run another program to make it set the NPCs X and Y position at created instead of adding to it's X or Y position it'd fix it as well.
Though it's still a pain.