At least two of the population passes in the ChunkProvider do not fire TerrainGen events like the vanilla one does (and they should). These two are Nether Quartz ore gen and the "scattered" buried lava blocks. Those two in particular break CondensedOres and LegacyCraft respectively.

Example block for quartz (from vanilla's ChunkProviderHell):

    doGen = TerrainGen.generateOre(worldObj, hellRNG, worldgenminable, k, l, QUARTZ);
    for (k1 = 0; doGen && k1 < 16; ++k1)
    {
        l1 = k + this.hellRNG.nextInt(16);
        i2 = this.hellRNG.nextInt(108) + 10;
        j2 = l + this.hellRNG.nextInt(16);
        worldgenminable.generate(this.worldObj, this.hellRNG, l1, i2, j2);
    }

So...has this been fixed for some version (1.8?), or has it been closed as "do not care"?

We don't have the nether stuff added to 1.8 yet so it should be working normally at the moment. I don't intend on copying the code from 1.7 so this should remain working. If something gets messed up when they are readded, feel free to reopen this.

I think Forstride just did a blanket close all on 1.7 issues since 1.8 is where we're mostly directing our attention to now