"Watch Your Step" isn't working

I have been hit by dart traps hundreds of times since 1.3, not to mention boulder and bomb traps.

They were naturally generated, and on separate worlds and characters.

I have had no problem getting the other achievements (I haven't encountered any bugs), and yet I cannot seem to get this achievement (Watch Your Step).

How can I get the 'Watch your Step' achievement?

EDIT: Okay, so funny story, the day after I posted this, I died to a plunger trap, and got the achivement! Go figure...