Hey so i was just in a bg, went to go up ramp to protect fc and then went and attacked mage, he blinked and then i saw that he blinked into the wall.. (which was funny cause he couldnt attack besides use cone of cold, nova, ring of frost etc and i kept ****ing with him :P). I dont know where he blinked but it wouldnt be too hard to replicate..Screenshot below..
Anyways, i couldnt attack him as i think he was los but i could melee attack him im pretty sure.. I realised that this could be a good spot for mages to sit with fc as they cant get attacked (besides melee i think) and a healer could just keep healing (i think, unsure.. if not they could use aoe heals or something) and also its pretty hard to see them when u run to go up to roof.. so people could hide there aswell.
Sorry if this isnt an exploit but i thought it would be so i decided to try contribute..