Last night, I was burning counts on one of my reds inside of a guild LT in the back stairs area on the first floor and got PK'd overnight. The LT runs a ban bot and leaves the front doors unlocked. My character is clearly out of line-of-sight, but the killer was still able to kill him. I checked the journal logs to be sure how he died, and the killer was already on the ban list. I've also reproduced the bug in the attached images: image #1 (corner1.png): Where my red was parked overnight image #2 (attack.png): Where my test character could successfully attack with a spell (magic arrow in this case) image #3 (corner2.png): Another spot I found to be compromised even out of LOS
I lost about 10 mil out of a L tower once. Mostly because I was lazy. But I don't think a living toon actually made it inside. I think they may have used some kind of exploit like what you are pointing out here to res a ghost from outside. They were very quiet about it and thieves usually like to brag. Perhaps they did get me legit but the circumstances were very suspect. Thanks.