rasterOrderGroupsSupported reported as false on Radeon Pro 560

According to https://developer.apple.com/metal/Metal-Feature-Set-Tables.pdf Raster order groups is supported in all Mac GPU family 2.

However, when running the code with my Radeon Pro 560 GPU,

supportsFamily(
MTLGPUFamilyMac2) returns true, but rasterOrderGroupsSupported returns false.

Raster order groups appears to not working correctly in Radeon Pro 560 either.

Is it a bug?