3D blocks that integrate with fences, iron bars, and walls and 3D blocks that break grass blocks

[raven verge]

For the grass, you can use minecraft:queued_ticking to always replace any dirt below with grass, running /fill.
For the connections you can use tags

[finite gazelle]

Hello, I would like to know what tags are used

[ancient garnet]

https://wiki.bedrock.dev/blocks/block-tags.html

[ancient garnet]

You can use these tags or make your own

[finite gazelle]

I looked at the tags, and which tag is responsible for not connecting the block to the fence?

[raven verge]

There are many, you have to choose based on your needs

[finite gazelle]

You didn't understand me again. I'm asking you what tags are used to ensure that the block does not connect to the vanilla fence. I didn’t find them in the article about block tags

[raven verge]

You can’t stop the vanilla walls or fences from connecting to your custom blocks. That goes to custom blocks only.