So the way the wall jumping bug works is by porting to a charter stone with no where to place your character, and so it takes you over the wall, right? Would it be possible to build a brick wall, with a palisade that has single width gaps, then another brick wall, creating pockets that the jumpers will be forced into into but cannot move around in or build more wood piles? They'll have to hearth to get out, or beat down the brick or palisade walls with their hands/tools. If that's too feasible (busting down the palisade fillers with picks) then I guess the only solution would be a 3 layer brick wall with single tile pockets every couple of spaces in the middle layer.
Or do I have this wrong?