Was playing in a superflat world (see above) an hour into playing a wandering trader appeared even though domobspawning was set to false and after I killed all mobs more than an hour ago after it spawned
Environment
Normal Superflat with generated structures off and doweather, dodaylightcycle, and domobspawning disabled.
I killed all mobs after setting domobspawawning to false.
Duplicate of MC-143420, please use the search function in the future.