Minecraft Monster Spawner Glitch?

Recently in my new Minecraft world I've been caving and finding some peculiar monster spawners. The cage and flame particles are all there, but there is no monster inside of the cage, and no mobs spawn out of it. If anybody has a fix for this, please answer. Also, I would rather not restart on a new world, as I've already put numerous hours into this one. Also, the glitched spawners were not only in this one mineshaft. There were spawners like this in other caves too. I am currently playing on normal difficulty, and other mobs spawn normally
Best Answer
From my research in Mojang's Bug Database, I have determined that your empty spawners are bugs. Some links which include reports about the bugs are listed.
Each of these bugs occured in Minecraft Pocket Edition.
Bug MCPE-9783: Empty mob spawners emit fire particles
Bug MCPE-8699: Can't see mob or particles in spawner
Bug MCPE-8902: Monster spawner / no mini mob spinning around in the monster spawner
These links elaborate and prove that this is a bug.
Please tell me if you are not using Minecraft Pocket Edition, and I will do more research.
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How do you get infinite spawners in Minecraft?
To break one, use a pickaxe, preferably Iron level or higher. Note, once you destroy one, it will not drop as a block, so break these only if you'd like to get rid of them permanently. While your opinion may differ, I find spawners to be excellent exp farms, and you can turn yours into a mob farm.How do you break a spawner in Minecraft and keep it 2020?
All you need to do to disable a spawner is light the blocks that are affected by the spawner with enough light so that they can't spawn hostile mobs....6 AnswersHow do you stop a spawner from spawning without breaking it?
Usage. Spawners can be used to make very effective "Mob Grinders", as they spawn more mobs faster when a player is in the spawner's vicinity. The best way to make one is by first make a large dark room around the spawner, then place down a "floor" 3-5 blocks below the spawner.Minecraft Spawner Glitch #shorts
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