The results for a trap disarm and setting it off are reversed. For an example if you set off a crossbow trap you get a crossbow, a string, and crossbow bolts. Whereas if disarmed it all you would get is the crossbow and a string. Also you get metal bolts from any crossbow trap, even if it was made from wooden bolts.
im pretty sure that happened in 0.3 and 0.2 too. Its not a huge deal, because you can just throw a can or something in the trap set it off and get the bolts instead of none.
It’s still a bug and it doesn’t seem to me like one that should be terribly hard to fix.