The Ox Strand Clustering modifier seems to prevent the generation of w coord.
Refer to the captured video and sample scene.
Confirmed with Ornatrix ver 6.3.4.23388 + V-Ray Next,Upd3.2 +3dsmax 2020
Please Fix.
https://drive.google.com/file/d/1D_6y2fiy37u-sh4ujet7OUXVj1sKyTIp/view?usp=sharing
https://drive.google.com/file/d/1j1J3zqMq3BifTr7Wk2oqtuK3Cq14F3PE/view?usp=sharing