This isn't really a bug, it's just an annoying behavior caused by the electrons that get created as part of the sing death, certain layouts of wire or conductive powders cause this when they are sparked at a certain point, you can use Ctrl = to reset any sparked metal to the original state.
@Simon(View Post) well I like it then I just don't like the never ending spark and thanks for telling me,but now there's a down voting bug ie:when I vote up later it says I voted down and later it says I voted up