Right now I am observing the following.
Usually every time I get an upvote somewhere, I get a signal about it in the upper right corner. Recently I declared a bounty (and awarded it for an answer) at somebody else's question. Now when I get upvotes, no signal comes. When I go to my page, there the reputation increase is reflected in the way it affects the decrease caused by the bounty (it was -100, then became -85, then -75, etc.).
It is a minor issue, but still - is not it possible to continue receiving these signals regardless whether I had reputation decrease or any other circumstances?