Many developers choose to remain on 3.8.99 rather than upgrading to 4.0+ to maintain compatibility with legacy game engines or specific internal pipelines. It represents the "final, polished form" of the 3.8 era, offering the most stable environment for projects that do not yet require the curve-based animation features of newer versions.
The following common issues and community-verified solutions have been reported for this specific update: Unity Import Error : Users often see "Could not automatically set AtlasAsset." : Change the atlas file extension from .atlas.txt spine 3899 updated
– Some PACS systems misread the new SR objects as duplicate studies. Fix: Adjust the DICOM modality worklist UID mapping. Many developers choose to remain on 3
By the third update, we noticed anomalies in the mirrored archives. Old error logs had been rewritten. Not erased — improved . Typos corrected. Stack traces reorganized. Even the timestamps now followed a cleaner sequence, as if someone had finally cleaned up the basement of a digital house that had been accumulating dust for a decade. Fix: Adjust the DICOM modality worklist UID mapping
If you are playing this or watching old VODs, expect the following changes:
Here is a complete write-up regarding that update and its implications.