That is a spot where those rusted breakable fences was...
For some reason when those get destroyed, sometimes they leave their invisible collision mesh behind, even though the actual model is destroyed/gone.
Did you know EJOD contains an invisible object as well? It's on Ruin, against the outside of the south wall of the "shed" (on the flag area), next to the other barrel.
Wait so you could stand on one side and have an enemy shoot at you and not be able to hurt you...can someone say banned for *2 finger bunny ears pump thing* H4X0r2 *2 finger bunny ears pump thing*