Just From a bug report: getting interrupted and then
resuming would sometimes produce two instances of the "You finish" message
(and evidently consumed an extra turn in the process). I think this is
an old problem and that it's just coincidence that it showed up right after
the patch dealing with avoidance of stale context for 'A'; the interruption
has to occur when there is just one turn left in removing the final item
so doesn't happen very often.