Yep - I remember when we were testing for that one. I didn’t test it myself, but I trust the guy involved to have followed the steps, and believe him when he said he’d tested it many times and not been able to repro it.
I think we’ve seen it 2-3 times total in thousands of test games here in the office, and never when we’re looking for it.
We’re pretty sure there’s a timing issue involved, when situations like this occur, and have a good idea what’s causing it. For the tech folk out there, there is a poorly implemented state machine in the spell system that relies on timers rather hard-and-fast state changes to advance its state. It went unnoticed in the initial release, but popped up when spell effects became more complex.
A fix is tricky, and has a little risk involved that it will cause a worse problem. So, after the fix, we need a LOT of QA on the spell system. If it were a simple fix, we would have done it a while back, but as I mentioned above, we’re going to make a big attempt to address this one for 2.2.
Actually - believe it or not - it is very closely related to many of the on-death problems with traits, though some of those are a separate issue.