Data driven blocks' geometries reaching outside 16x16x16 are broken

Hello, on my add-on, any data driven block that I have made prior to this version was able to have geometries with cubes reaching beyond 16x16x16, but now whenever I load up a world with them, they just show the update block. I have tested this by tweaking the geometry to have all cubes inside a 16x16x16 block and it works just fine. Thank you.