I, a trap thief, will see "A trap is sprung!" whenever someone walks through a trap, even if the trap doesn't do anything, although the trap remains.

Maybe I'm misinterpreting what exactly a trap is, but it seems like when it fails to work it should either be:
A) Someone walks past and nothing happens; or
B) Someone walks into the trap triggering it but the trap fails, displaying "A trap is sprung!" and nothing more, and now the trap is gone.

B) would really suck.

Thanks