I've found (a couple of times now) that if something happens while you are swatting a time bomb, you end up with a non-working bomb
Once I've ended up with a bomb with the needle spinning (was given a parachute while swatting)
and one the needle stuck pointing up wards, and neither swatter, bumping into other karts, getting another bomb (which was drawn in the same place resulting in two needles!), driving into a banana or being rescued would make it go away
Has this happened to anyone else? Does it happen in the latest dev version?