The Meta Universal Render Pipeline (URP) fork is incompatible with Unity 6.5, causing developers to downgrade to Unity 6.4 for compatibility. When using Unity 6.5 with standard OpenXR Space Warp and Unity's native URP, Application Space Warp introduces significant visual distortion artifacts during head movement, particularly affecting the skybox and distant static objects. These issues are resolved with Meta's URP fork, but its lack of Unity 6.5 support and 7-month update gap hinder developers needing Application Space Warp on the latest Unity version.