Sometimes while playing Deathmatch, I'll see a prompt telling me that I've gotten credit for eliminating my own Steel Trap or Concussion Mine while playing as Junkrat.
I've had this happen to me 2 or 3 times, but only while playing as Junkrat in Deathmatch mode. I haven't been able to figure out how this happened, or how to prevent it.
This doesn't seem to be a bug with Junkrat's grenade launcher. When I tried firing directly at the trap, the grenades didn't do any damage.
How is it possible to eliminate my own Steel Trap as Junkrat?
Best Answer
It's a bug currently present with deployables in Free-For-All Deathmatch. Since there are no teams, a player's own deployables such as Junkrat's trap and Orisa's shield sometimes behave oddly, such as Junkrat's trap being destroyed by his own Concussion Mine and Orisa's shield blocking the pull effect from her alternate fire. There's nothing you can do except wait for a patch to fix it.
This link to Overwatch Patch notes for 1.15 confirms the following bug in FFA;