So I was choosing a knife to buy and realized some of them look broken, as if there were some errors when they were ported to CS2 (maybe triangulation changed or just normals work differently in new engine, can only guess). I attached screenshots of M9 where you can see issues all over the model if you look closely and Kukri knife where there are obvious issues around the hole, but there are instances of this happening on much more models, even USP-S, around the cutouts