Stronghold Generated On Superflat World

I'm exploring my fresh-created superflat world, and idk why i'm trying to use /locate stronghold command, and interestingly, it's work, it's show the stronghold coordinate

i go to the stronghold, and i found a flying stronghold in superflat world

how to reproduce :

-create a superflat world in 1.18.2

-use /locate stronghold command

-click on the command to get teleported to the "flying stronghold"

-flying stronghold there.