Maybe not the same issue, but I did 13 runs of stop the bloodshed today(3box, fake d/c 2 chars before going in and solo it on 3rd for ??? item) and the radius for chigoes to aggro definitely seemed to have dropped as well. I have done this assault countless times before(up to near 0/100 on aileron mantle.. lol), so I'm pretty sure I can notice the difference. Some people were reporting problems with the antlion and worm in dynamis-tavnazia as well, maybe a global problem with invisible mobs?