PassableLeaves-1.12-6.1.0.0
Having your head in a leaf block - for example if there's a 2-high pile of leaf blocks and you're standing in it - gives you xray vision allowing you to look through the world.

This has been confirmed in 1.10.2, 1.11.2 and 1.12.

Only happens with 'Fast' graphics... 'Fancy' graphics works as expected.

Its because being inside a fully opaque block culls those faces, so you either have to lock leaves to fancy, or disable their culling.

Makes sense... so to disable culling, I guess we'd need to add this to the ASM we're doing?

    public boolean isOpaqueCube(IBlockState state) {
        return false;
    }

@HellFirePvP

On it tomorrow.

This can likely be done in the future, but considering the unpopularity of running the game with fast graphics by most users this is low-priority.

@srs-bsns any news about fix it?)

1.12 is EOL, and so is this mod.