Whenever I put something on trash, normally means that I am not interested in having it counted as part of the statistics, this is not the bug, but I think would be the correct procedure.
Now the real bug is, whenever I move something to trash and then empty the trash, the session/project target are not updated. The words that doesn’t exist anymore should be discounted.
They should certainly be discounted from the Draft Statistics. Session statistics count anything you have typed during the session, though, regardless of what you do with it - it’s just an accumulative count. 2.0 will allow you to choose whether it should only apply to documents within the Draft folder, rather than count everything, though.
All the best,
Keith