I have deep holes in void in new 1.18 update plz fix this

Is this only happening on a Dedicated Server, realms, multiplayer or singleplayer? What plaform/device are you using?
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Hello I have a lot of void holes in my world. I was hoping you could just have a code run that checks for bedrock at -64 and if theres no bedrock it replaces with bedrock.

I used unmined to show you what is below y = 0 on my bedrock world. 

yes caves and cliffs experiemental is on. 

It seems that there is giant bedrock pillars in some places too. 

in my screenshot you can see where I put a nether at the bottom of the hole, I had to cover a lot of void using netherack and it's only 1 block deep so if you go down there and break a block you can fall into the void.

When building the nether hole, My friend actually fell in and lost her stuff a few times. 

sometimes when mining, I come across these huge gaps in generation. 

the blending seems to have been broken.