Minecraft version: 1.19.2
Modloader: Fabric
Fabric loader version: 0.14.9
Environment: Singleplayer
Mod version: 1.4.5

Describe the bug

I can't hit my cows if I put slab in front of me, but I need slab for my leather and beef farm.

Screenshots or video recordings

https://imgur.com/a/hYNIcT1

Others have complained about such issues too.
This usecase is considered cheesing the game, the collision detection algorithm was not designed to handle this.

You need to set "allow_attacking_thru_walls": true in your server config to hit the cows thru such tiny hole.

No additional support is provided for this usecase.

Where to set it? I'm playing in Singleplayer.

Read project readme.