In November 2025, delivered a critical correctness fix for rotary positional embeddings in huggingface/diffusers, ensuring dimensional consistency across Wan and SkyReels V2 transformers. The fix stores t_dim, h_dim, and w_dim as instance variables in the relevant rotary embedding classes, and uses these stored dimensions in forward, aligning with initialization logic. This resolved a dimensional mismatch between init (using // 6) and forward (using // 3), and ensured split_sizes matched the actual embedding dimensions. The change reduces runtime errors in model initialization and inference, improves reproducibility, and supports stable usage across Wan and SkyReels V2 deployments. Collaboration with Charchit Sharma; quality improvements and documentation were included.