Some variables are not condensed to invocations.

[LexManos]

1.16-pre1 ScaffoldingBlock's static class doesn't condense stack variables into the argument list.
This causes the field initializes to not be inlined.

      VoxelShape voxelshape = Block.func_208617_a(0.0D, 14.0D, 0.0D, 16.0D, 16.0D, 16.0D);
      VoxelShape voxelshape1 = Block.func_208617_a(0.0D, 0.0D, 0.0D, 2.0D, 16.0D, 2.0D);
      VoxelShape voxelshape2 = Block.func_208617_a(14.0D, 0.0D, 0.0D, 16.0D, 16.0D, 2.0D);
      VoxelShape voxelshape3 = Block.func_208617_a(0.0D, 0.0D, 14.0D, 2.0D, 16.0D, 16.0D);
      VoxelShape voxelshape4 = Block.func_208617_a(14.0D, 0.0D, 14.0D, 16.0D, 16.0D, 16.0D);
      field_220121_d = VoxelShapes.func_216384_a(voxelshape, voxelshape1, voxelshape2, voxelshape3, voxelshape4);
      VoxelShape voxelshape5 = Block.func_208617_a(0.0D, 0.0D, 0.0D, 2.0D, 2.0D, 16.0D);
      VoxelShape voxelshape6 = Block.func_208617_a(14.0D, 0.0D, 0.0D, 16.0D, 2.0D, 16.0D);
      VoxelShape voxelshape7 = Block.func_208617_a(0.0D, 0.0D, 14.0D, 16.0D, 2.0D, 16.0D);
      VoxelShape voxelshape8 = Block.func_208617_a(0.0D, 0.0D, 0.0D, 16.0D, 2.0D, 2.0D);
      field_220122_e = VoxelShapes.func_216384_a(field_220123_f, field_220121_d, voxelshape6, voxelshape5, voxelshape8, voxelshape7);
   }

Edit: Looked into it more and it is correct to not move the initalizers up, as it would change the order from the bytecode. So when we fix this we also need to fix that check...