monsters are spawning out of monster spawner block even if monster spawning is false in server

We do not have enough information to find the cause of this issue.

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i can not edit this bug report. i can not add video because i can not edit this bug report

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i can not locate dungeon with monster spawner block i can only locate trial chambers and mineshaft

In that world, please run /gamerule doMobSpawning and show the output of the command. Please attach this world file as you have it currently in your server

This is a duplicate of MC-168581. Until that issue is fixed, if you don’t want spawners to spawn hostile mobs either set the difficulty to peaceful or create/install a datapack which kills any zombies, skeletons, spiders, cave spiders, blazes, magma cubes, silverfish, breezes, husks, slimes, strays and bogged. (You can also target zombie villagers if you don’t want them to appear in igloos or zombie villages.) You can also disable trial chamber generation via datapack and this means you will not have to worry about breezes, husks, slimes, strays and bogged.