I have a trapped, unlocked, bugged crate that someone left at Luna, trying to kill newbs I guess. Knowing about this from old, I picked it up. Using my warrior (all 70's resists) I opened it. 90 damage, at 70 resists!!!

I will try tonight. My guess is that whatever bug is used to make perma trapped chests, was modified so that it was perma trapped and locked. Then when you tried to target it, it sensed you as a dbl clicking it.

Not the first time I have heard of a mysterious fourth chest in Yew., Both times (back on Baja), it was one of these bugged chests.